noun

• (clothing) A knitted or woven covering for the foot.
• (historical, uncommon) Synonym of soccus, a light shoe worn by Ancient Greek and Roman comedic actors.
• (Internet slang) A sock puppet (type of online account).
• (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."

verb

• (slang, transitive) To hit or strike violently; to deliver a blow to.
  ""We must get the old dear out," said Lord Roxton to Malone. "He'll be had for manslaughter if we don't. What I mean, he's not responsible - he'll sock someone and be lagged for it.""
• (slang, transitive) To throw.

noun

• (slang) A violent blow; a punch.
  "‘Say, does that sock in the jaw hurt any more? It was a dinger.’"

adj

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