sock

Etymology 1

From Middle English socke, sokke, sok, from Old English socc (“sock, light shoe, slipper”), a West Germanic borrowing from Latin soccus (“a light shoe or slipper, buskin”), from Ancient Greek σύκχος (súkkhos, “a kind of shoe”), probably from Phrygian or from an Anatolian language. Cognate with Scots sok (“sock, stocking”), West Frisian sok (“sock”), Dutch sok (“sock”), German Socke (“sock”), Danish sok, sokke (“sock”), Swedish sock, socka (“sock”), Icelandic sokkur (“sock”).

noun

1. A knitted or woven covering for the foot.
2. (historical, uncommon) Synonym of soccus, a light shoe worn by Ancient Greek and Roman comedic actors.
3. A cat's or dog's lower leg that is a different color (usually white) from the color pattern on the rest of the animal.
4. (Internet slang) A sock puppet.
5. (aviation, informal) Ellipsis of windsock.
   At 1331:58, UA Flight 757 reported that it was ready for takeoff on runway 35R. However, at 1332:05, 7 seconds later, it reported, "Ah, this is seven fifty seven, our sock sitting in front of us gives us a pretty good tail wind so we're not ready to go yet." The controller asked the flight to advise him when conditions were better. 21 March 1985, National Transportation Safety Board, “1.1 History of the Flight”, in Aircraft Accident Report: United Airlines Flight 663, Boeing 727-222, N7647U, Denver, Colorado, May 31, 1984, page 4
6. (firearms, informal) Ellipsis of gun sock.

Etymology 2

Onomatopoeic. Compare Portuguese soco ("a hit with one's hand; a punch").

intj

1. The sound of a punch or powerful blow.
   Whap, Biff, Ooooof, Sock, Pow, Zok! Batman is back. Gotham City is again leaving its law and order in the hands of a man who wears plastic underpants over his tights. 5 Jun 1989, The Canberra Times, Australia Captial Territory, page 10, column 2

verb

1. (slang, transitive) To hit or strike violently; to deliver a blow to.
   They may let you off the first time because you're new maybe. But the second time they'll sock it to you, give you a couple of days in the Hole, then throw you in Number Two. 1951, James Jones, From Here to Eternity, Book Four
   As part of ABC’s coverage of the police “blue riot” that ensued in Chicago – batons cracking student skulls – Vidal calls Buckley a “crypto-Nazi” for justifying the brutality, to which Buckley snaps: “Listen to me you queer, stop calling me a crypto-Nazi or I’ll sock you in the goddamn face and you’ll stay plastered.” 2015-08-01, Ed Vulliamy, quoting William F. Buckley Jr., “‘Don’t call me a crypto-Nazi!’ The lost heart of political debate”, in The Guardian
2. (slang, transitive) To throw.

noun

1. (slang) A violent blow; a punch.
   ‘Say, does that sock in the jaw hurt any more? It was a dinger.’ 1932, Delos W. Lovelace, King Kong, published 1965, page 21

adj

1. (slang, dated) Extremely successful.
   1960, Billboard magazine reviewer Sock performance on a catchy rhythm ditty with infectious tempo.

Etymology 3

From French soc, from Late Latin soccus, perhaps of Celtic origin.

noun

1. A ploughshare.
   D. Brewster, The Edinburgh Encyclopaedia In Wexford, the beam is shorter than in any of the other counties, and the sock in general is of cast iron.

Etymology 4

From socket.

noun

1. (computing, networking) Abbreviation of socket.