round (adj.)

late 13c., from Anglo-French rounde, Old French roont (12c., Modern French rond), probably originally *redond, from Vulgar Latin *retundus (source also of Provençal redon, Spanish redondo, Old Italian ritondo), from Latin rotundus "like a wheel, circular, round," related to rota "wheel" (see rotary).

As an adverb from c. 1300; as a preposition from c. 1600. In many uses it is a shortened form of around. The French word is the source of Middle Dutch ront (Dutch rond), Middle High German runt (German rund) and similar Germanic words.

Of numbers from mid-14c., from earlier sense "full, complete, brought to completion" (mid-14c., notion of symmetry extended to that of completeness). Round trip is by 1844, originally of railways. Round heels attested from 1926, in reference to incompetent boxers, 1927 in reference to loose women, in either case implying an inability to avoid ending up flat on one's back.

round (n.)

early 14c., "a spherical body," from round (adj.) and Old French roond. Compare Dutch rond, Danish and Swedish rund, German runde, all nouns from adjectives. Meaning "large round piece of beef" is recorded from 1650s. Theatrical sense (in phrase in the round) is recorded from 1944. Sense of "circuit performed by a sentinel" is from 1590s; that of "recurring course of time" is from 1710. Meaning "song sung by two or more, beginning at different times" is from 1520s. Golfing sense attested from 1775. Meaning "quantity of liquor served to a company at one time" is from 1630s; that of "single bout in a fight or boxing match" is from 1812; "single discharge of a firearm" is from 1725. Sense of "recurring session of meetings or negotiations" is from 1964.

round (v.)

late 14c., "to make round," from round (adj.). Sense of "make a circuit round" is from 1590s. Sense of "bring to completeness" is from c. 1600; meaning "to approximate (a number)" is from 1934. Meaning "turn round and face, turn on and assault" is from 1882. Round out "fill up" is from 1856. Related: Rounded; rounding.

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Definitions of round from WordNet
round (n.)
a charge of ammunition for a single shot;
Synonyms: unit of ammunition / one shot
round (n.)
an interval during which a recurring sequence of events occurs;
Synonyms: cycle / rhythm
round (n.)
a regular route for a sentry or policeman;
Synonyms: beat
round (n.)
(often plural) a series of professional calls (usually in a set order);
the doctor goes on his rounds first thing every morning
we enjoyed our round of the local bars
the postman's rounds
round (n.)
the activity of playing 18 holes of golf;
a round of golf takes about 4 hours
Synonyms: round of golf
round (n.)
the usual activities in your day;
the doctor made his rounds
Synonyms: daily round
round (n.)
(sports) a division during which one team is on the offensive;
Synonyms: turn / bout
round (n.)
the course along which communications spread;
the story is going the rounds in Washington
round (n.)
a serving to each of a group (usually alcoholic);
he ordered a second round
Synonyms: round of drinks
round (n.)
a cut of beef between the rump and the lower leg;
round (n.)
a partsong in which voices follow each other; one voice starts and others join in one after another until all are singing different parts of the song at the same time;
they enjoyed singing rounds
Synonyms: troll
round (n.)
an outburst of applause;
there was a round of applause
round (n.)
a crosspiece between the legs of a chair;
Synonyms: rung / stave
round (n.)
any circular or rotating mechanism;
Synonyms: circle
round (v.)
wind around; move along a circular course;
round the bend
round (v.)
make round;
round the edges
Synonyms: round out / round off
round (v.)
pronounce with rounded lips;
Synonyms: labialize / labialise
round (v.)
attack in speech or writing;
Synonyms: attack / assail / lash out / snipe / assault
round (v.)
bring to a highly developed, finished, or refined state;
Synonyms: polish / round off / polish up / brush up
round (v.)
express as a round number;
round off the amount
Synonyms: round off / round down / round out
round (v.)
become round, plump, or shapely;
Synonyms: flesh out / fill out
round (adj.)
having the shape or form of a circle;
Synonyms: circular
round (adj.)
(of sounds) full and rich;
Synonyms: orotund / rotund / pear-shaped
round (adj.)
(mathematics) expressed to the nearest integer, ten, hundred, or thousand;
in round numbers
round (adv.)
from beginning to end; throughout;
It rains all year round on Skye
Synonyms: around