Etymology
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pick (n.2)

a name of pointed instruments of various kinds, and also other noun senses, in most cases from pick (v.) but in some perhaps with some influence of pick (n.1). Meaning "a blow with a pointed instrument" is from mid-15c; the sense in toothpick is from late 15c. The meaning "plectrum for a guitar, lute, etc." is from 1895. As a type of basketball block, from 1951. The meaning "right of selection, first choice" is by 1772, hence "choicest part or example" (by 1858). Meaning "instrument for picking locks" is by 1890.

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pick (n.1)

c. 1200, "pointed iron tool for breaking up rock or ground," apparently a variant of pike (n.4).

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pick (v.)

early 13c., picken "to peck;" c. 1300, piken "to work with a pick, to dig up," probably representing a fusion of Old English *pician "to prick," (implied by picung "a piercing, pricking," an 8c. gloss on Latin stigmata) with Old Norse pikka "to prick, peck," both from a Germanic root (source also of Middle Dutch picken, German picken "to pick, peck"), perhaps imitative. Influence from Middle French piquer "to prick, sting" (see pike (n.1)) also is possible, but that French word generally is not considered a source of the English word. Related: Picked; picking.

Meaning "to pluck with the hand or fingers, gather, break off, collect" (fruit, etc.) is from early 14c.; that of "to prick or pierce with a pointed instrument" also is from early 14c. The meaning "to choose, sort through carefully in search of valuable material" emerged late 14c., from the earlier meaning "to pluck with the fingers." The sense of "to rob, plunder" (c. 1300) weakened to a milder sense of "steal petty things, filch or pilfer from" by late 14c.  Meaning "to eat with small bites" is from 1580s.

Of locks, etc., "probe or penetrate with a pointed tool," early 15c. The meaning "to pluck (a banjo, etc.) with the fingers" is recorded from 1860. To pick a quarrel, fight, etc. is from mid-15c.; to pick at "annoy with repeated fault-finding" is from 1670s. To pick on "single out for adverse attention" is from late 14c. Also see pick up.

To pick off "shoot one by one" is recorded from 1810; baseball sense, of a pitcher or catcher, "to put out a runner caught off base" is by 1939. To pick and choose "select carefully" is from 1660s (choose and pick is attested from c. 1400). To pick (one's) nose is by mid-15c.

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out-and-out 

c. 1300 as an adverbial phrase, "completely, thoroughly, to the utmost degree," from out (adv.). Adjective usage is attested by 1813.

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out- 

in Old English a common prefix with nouns, adjectives, adverbs, and verbs, "out, outward, outer; forth, away," from out (adv.). The use was even more common in Middle English, and also with the senses "outer, outside, on the outside, from without, external, externally; apart; greatly, extremely; completely, thoroughly, to completion." Other senses of out that extended into the use as a prefix include "beyond the surface or limits; to the utmost degree; to an explicit resolution."

In composition out has either its ordinary adverbial sense, as in outcast, outcome, outlook, etc., or a prepositional force, as in outdoors, or forms transitive verbs denoting a going beyond or surpassing of the object of the verb, in doing the act expressed by the word to which it is prefixed, as in outrun, outshine, outvenom, etc. In the last use especially out may be used with almost any noun or verb. [Century Dictionary]
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out (n.)

late 15c., "egress," from out (adj). From 1620s, "a being out" (of something), from out (adv.). From 1764 in politics as "the party which is out of office." From 1860 in the baseball sense "act of getting an opposing player out of active play." From 1919 as "means of escape; alibi."

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out (v.)

Old English utian "expel, put out," from the source of out (adv.). It has been used in many specific senses over the years; the meaning "disclose to public view, reveal, make known" is by mid-14c.

Eufrosyne preyde Þat god schulde not outen hire to nowiht. ["Legendary of St. Euphrosyne," c. 1350]

Meaning "to expose as a closet homosexual" is first by 1990 (as an adjective meaning "openly avowing one's homosexuality" it dates from 1970s; see closet). To come out "declare oneself publicly as homosexual" is from 1968 and probably short for come out of the closet. Related: Outed; outing. Compare outen.

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out (adj.)

late Old English, "outer," from out (adv.). From mid-13c. as "that is or lies on the outside, exterior." Of a light or candle, "extinguished, no longer burning," c. 1300.  Sense of "no longer secret" is by 1713. Sense in baseball (1860) was earlier in cricket (1746). Meaning "unconscious" is attested from 1898, originally in boxing from the notion of "defeated ('out') by failing to rise within a 10-count." To be out on one's feet is from 1952. From 1966 as "unfashionable, not stylish, popular, or modern."

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out (adv.)

expressing motion or direction from within or from a central point, also removal from proper place or position, Old English ut "out, without, outside," from Proto-Germanic *ūt- (Old Norse, Old Frisian, Old Saxon, Gothic ut, Middle Dutch uut, Dutch uit, Old High German uz, German aus), from PIE root *uidh- "up, out, up away, on high" (source also of Sanskrit ut "up, out," uttarah "higher, upper, later, northern;" Avestan uz- "up, out," Old Irish ud- "out," Latin usque "all the way to, continuously, without interruption," Greek hysteros "the latter," Russian vy- "out").

Sense of "to a full end, completely, to a conclusion or finish" is from c. 1300. Meaning "so as to be no longer burning or alight; into darkness" is from c. 1400. Of position or situation, "beyond the bounds of, not within," early 15c. Meaning "into public notice" is from 1540s; that of "away from one's place of residence," c. 1600. The political sense of "not in office, removed or ejected from a position" is from c. 1600. Meaning "come into sight, become visible" (of stars, etc.) is by 1610s. In radio communication, a word indicating that the speaker has finished speaking, by 1950.

As a preposition, "out of; from, away from; outside of, beyond; except; without, lacking;" mid-13c., from the adverb.

Meaning "from harmonious relations, into quarreling" (as in to fall out) is from 1520s. Meaning "from one's normal state of mind" (as in put out) is from 1580s; out to lunch "insane" is student slang from 1955. Adjectival phrase out-of-the-way "remote, secluded" is attested from late 15c. Out-of-towner "one not from a certain place" is from 1911. Out of this world "excellent" is from 1938; out of sight "excellent, superior" is from 1891. To (verb) it out "bring to a finish" is from 1580s. Expression from here on out "henceforward" is by 1942. Out upon, expressing abhorrence or reproach, is from early 15c.

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cherry-pick (v.)

"to select the very best selfishly," 1959 (implied in cherry-picking), American English (Billboard magazine), a pejorative figurative sense, from cherry (n.) + pick (v.). Related: Cherry-picked. Cherry-picker as a name for a crane with a bucket for raising and lowering persons (as to pick cherries from a tree) is by 1961; earlier it was the name of a type of railroad crane.

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