concurrent (adj.)youdaoicibaDictYouDict[concurrent 词源字典]
late 14c., from Old French concurrent or directly from Latin concurrentem (nominative concurrens), present participle of concurrere (see concur). Related: Concurrency; concurrently. Concurrent jurisdiction is recorded from 1767.[concurrent etymology, concurrent origin, 英语词源]
hand (n.)youdaoicibaDictYouDict
Old English hond, hand "the human hand;" also "side, part, direction" (in defining position, to either right or left); also "power, control, possession" (on the notion of the hand's grip or hold), from Proto-Germanic *handuz (cognates: Old Saxon, Old Frisian, Dutch, German hand, Old Norse hönd, Gothic handus), which is of uncertain origin. The original Old English plural handa was superseded in Middle English by handen, later hands. Indo-European "hand" words tend to be from roots meaning "seize, take, collect" or are extended from words originally meaning only a part of the hand (such as Irish lam, Welsh llaw, cognate with Latin palma and originally meaning "palm of the hand"). One ancient root, represented by Latin manus (see manual (adj.)) is represented in Old English by mund "hand," but more usually "protection, guardianship; a protector, guardian."

Meaning "manual worker, person who does something with his hands" is from 1580s, hence "hired workman" (1630s) and "sailor in a ship's crew" (1660s). Meaning "agency, part in doing something" is from 1590s. Clock and watch sense is from 1570s. Meaning "round of applause" is from 1838. The linear measure of 4 inches (originally 3) is from 1560s, now used only in giving the height of horses. The meaning "playing cards held in one player's hand" is from 1620s; that of "a round at a card game" is from 1620s. Meaning "handwriting" is from late 14c.; also "one's style of penmanship" (early 15c.). The word in reference to the various uses of hands in making a pledge is by c. 1200; specifically "one's pledge of marriage" by late 14c.

First hand, second hand, etc. (mid-15c.) are from the notion of something being passed from hand to hand. At hand is from c. 1200 as "near in time," c. 1300 as "within reach." Out of hand (1590s) is opposite of in hand "under control" (c. 1200). Adverbial phrase hand-over-fist (1803) is nautical, suggestive of hauling or climbing by passing the hands one before the other alternately. To win something hands down (1855) is from horse racing, from a jockey's gesture of letting the reins go loose in an easy victory.
The Two Thousand Guinea Stakes was not the best contested one that it has been our fortune to assist at. ... [T]hey were won by Meteor, with Scott for his rider; who went by the post with his hands down, the easiest of all easy half-lengths. Wiseacre certainly did the best in his power to spoil his position, and Misdeal was at one time a little vexatious. ["The Sportsman," report from April 26, 1840]
Phrase on the one hand ... on the other hand is recorded from 1630s, a figurative use of the physical sense of hand in reference to position on one side or the other side of the body (as in the lefthand side), which goes back to Old English Hands up! as a command from a policeman, robber, etc., is from 1863, from the image of holding up one's hands as a token of submission or non-resistance. Hand-to-hand "in close contact," of fighting, is from c. 1400. Hand-to-mouth is from c. 1500. Hand-in-hand attested from c. 1500 as "with hands clasped;" figurative sense of "concurrently" recorded from 1570s.
pipe (v.)youdaoicibaDictYouDict
Old English pipian "to play on a pipe," from Latin pipare "to peep, chirp" (see pipe (n.1)). Compare Dutch pijpen, German pfeifen. Meaning "convey through pipes" is first recorded 1887. Related: Piped; piping. Piping hot is in Chaucer, a reference to hissing of food in a frying pan; to pipe up (early 15c.) originally meant "to begin to play" (on a musical instrument); sense of "to speak out" is from 1856. Pipe down "be quiet" is from 1900, probably a reversal of this, but earlier (and concurrently) in nautical jargon it was a bo'sun's whistle signal to dismiss the men from duty (1833).
plurality (n.)youdaoicibaDictYouDict
late 14c., "state of being plural," from Old French pluralite (14c.), from Late Latin pluralitatem (nominative pluralitas), from Latin pluralis (see plural). Meaning "fact of there being many, multitude" is from mid-15c. Church sense of "holding of two or more offices concurrently" is from mid-14c. Meaning "greater number, more than half" is from 1570s but is etymologically improper, perhaps modeled on majority. U.S. sense of "excess of votes over rival candidate(s)," especially when none has an absolute majority, is from 1828.
prohibition (n.)youdaoicibaDictYouDict
late 14c., "act of prohibiting, a forbidding by authority," from Anglo-French and Old French prohibition (early 13c.), from Latin prohibitionem (nominative prohibitio) "a hindering, forbidding; legal prohibition," noun of action from past participle stem of prohibere "hold back, restrain, hinder, prevent," from pro- "away, forth" (see pro-) + habere "to hold" (see habit (n.)). Meaning "forced alcohol abstinence" is 1851, American English; in effect nationwide in U.S. as law 1920-1933 under the Volstead Act.
People whose youth did not coincide with the twenties never had our reverence for strong drink. Older men knew liquor before it became the symbol of a sacred cause. Kids who began drinking after 1933 take it as a matter of course. ... Drinking, we proved to ourselves our freedom as individuals and flouted Congress. We conformed to a popular type of dissent -- dissent from a minority. It was the only period during which a fellow could be smug and slopped concurrently. [A.J. Liebling, "Between Meals," 1959]
Related: Prohibitionist.