1908, agent noun from hike (v.). Earlier as a type of boat:
The "hiker" or "tuck-up" as it is more generally termed, is a craft peculiar to the Delaware River, and is to the youth residing along the banks of that stream what the racing shell is to the Torontonian .... The origin of the name "hiker" is veiled in mystery. No member of the clubs engaged in sailing these boats can give anything like a satisfactory derivation of the word. The most common explanation is that it is corrupted from the local verb "to hike," which means to run or fly swiftly. ["Harper's Young People," 1885]
Meaning "kind, affectionate, loving" first recorded early 14c. Meaning "having the delicacy of youth, immature" is attested in English from early 14c. Related: Tenderly; tenderness. Tender-hearted first recorded 1530s.
late 14c., salade, "raw herbs cut up and variously dressed," from Old French salade (14c.) and Medieval Latin salata, both from Vulgar Latin *salata, literally "salted," short for herba salata "salted vegetables" (vegetables seasoned with brine, a popular Roman dish), from fem. past participle of *salare "to salt," from Latin sal (genitive salis) "salt" (from PIE root *sal- "salt").
Dutch salade, German Salat, Swedish salat, Russian salat are from Romanic languages. Later extended to dishes composed of meat chopped and mixed with uncooked herbs and variously seasoned (chicken salad, etc.). In reference to the raw herbs and vegetables themselves, in U.S. it is colloquially limited to lettuce (by 1838).
Salad oil "olive oil used for dressing salads," is by 1550s. Salad-fork is by 1808. Salad bar is attested by 1940, American English. Salad days "time of youthful inexperience" (perhaps on notion of "green") was used by Shakespeare ("Antony and Cleopatra," 1606) and owes its survival, if not its existence, to him.
Whether the point is that youth, like salad, is raw, or that salad is highly flavoured & youth loves high flavours, or that innocent herbs are youth's food as milk is babes' & meat is men's, few of those who use the phrase could perhaps tell us ; if so, it is fitter for parrots' than for human speech. [Fowler]
Old English turf, tyrf "slab of soil and grass, sod," also "surface of grassland," from Proto-Germanic *turfa- (source also of Old Norse torf, Danish tørv, Old Frisian turf, Old High German zurba, German Torf), from PIE root *drebh- "to wind, compress" (source also of Sanskrit darbhah "tuft of grass").
Especially "the race course," hence the turf "the profession of racing horses" (1755). French tourbe "turf" is a Germanic loan-word. The Old English plural was identical with the singular, but in Middle English turves sometimes was used. Slang meaning "territory claimed by a gang" is attested from 1953 in Brooklyn, N.Y.; earlier it had a jive talk sense of "the street, the sidewalk" (1930s), which is attested in hobo use from 1899, and before that "the work and venue of a prostitute" (1860). Turf war is recorded from 1962.
"temporary passageway" to a ship, building under construction, etc., ultimately from Old English gangweg "road, passage, thoroughfare;" a compound of gang (n.) in its original sense "a going, journey, way, passage" and way (n.). Nautical use dates from 1680s in reference to a passage on the ship, from 1780 of the opening at the side whereby people enter and leave, and by 1840s of the board or bridge they use to get to and from the dock. As a command to clear way, attested by 1912, American English. In British parliamentary use, with somewhat the same sense aisle has in the U.S. Congress.
Below the g[angway], as a parliamentary phrase, is applied to members whose customary seat does not imply close association with the official policy of the party on whose side of the House they sit. [Fowler]
1560s, "one who dodges or evades" in any sense, especially "one practiced in artful shifts," agent noun from the literal or figurative (especially underworld) senses of dodge (v.).
The U.S. meaning "corn cake" is recorded from 1831 (usually as corn-dodger) and is perhaps a different word: Compare Northern English dialectal dodge "lump, large piece" (1560s).
The Artful Dodger (Jack Dawkins), so called for his skill in picking pockets, leader of a gang of child criminals, is from Dickens' "Oliver Twist" (1837-39).
The U.S. baseball club the Dodgers, originally based in Brooklyn, N.Y., was so called from 1900, from trolley dodgers, a Manhattanites' nickname for Brooklyn residents, in reference to the streetcar lines that then crisscrossed the borough.
1640s (in Anglo-Latin from early 14c.), shortening of posse comitatus "the force of the county" (1620s, in Anglo-Latin from late 13c.), from Medieval Latin posse "body of men; power," from Latin posse "have power, be able" (see potent) + comitatus "of the county," genitive of Late Latin word for "court palace" (see comitatus). General sense of "an armed force" is from 1640s; the modern slang meaning "small gang" probably is from Western movies.
Posse comitatus, the power of the county; in law, the body of men which the sheriff is empowered to call into service to aid and support him in the execution of the law, as in case of rescue, riot, forcible entry and occupation, etc. It includes all male persons above the age of fifteen. In Great Britain peers and clergymen are excluded by statute. The word comitatus is often omitted, and posse alone is used in the same sense. [Century Dictionary]
Clean Living is opposed to anything and everything which speaks for physical and mental disorder, dirt, disease, distress and discontent. Clean Living stands for babies, better born and better bred, better clothed and better fed; happier, healthier babies with normal play, normal environment and a normal chance to live and develop. Clean Living stands for youth, the critical time, the unfolding time, the time when muscle, mind, morals and manners of the boy and girl shall start right or wrong, for health and success or disease and failure. [Clean Living, vol. I, no. 1, April 1916, Chicago]
"hot season of the year," Old English sumor "summer," from Proto-Germanic *sumra- (source also of Old Saxon, Old Norse, Old High German sumar, Old Frisian sumur, Middle Dutch somer, Dutch zomer, German Sommer), from PIE root *sm- "summer" (source also of Sanskrit sama "season, half-year," Avestan hama "in summer," Armenian amarn "summer," Old Irish sam, Old Welsh ham, Welsh haf "summer").
As an adjective from c. 1300. Summer camp as an institution for youth is attested from 1886; summer resort is from 1823; summer school first recorded 1810; theatrical summer stock is attested from 1941 (see stock (n.2)). Old Norse sumarsdag, first day of summer, was the Thursday that fell between April 9 and 15.