noun

• (cooking) Meat from the shoulder of a cow or other animal.
  "Arm chucks represent approximately 54% of the beef forequarters."
• (US, slang, dated) Food.
  "“Hambone, how's for chuck?” Hambone removed pipe from mouth, slowly. “Wal, I reckon I still got a few whistleberries left. Some sonofabitch stew mabbe. A few shot biscuits.”"
• (mechanical engineering) A mechanical device that holds an object firmly in place, for example holding a drill bit in a high-speed rotating drill or grinder.
  "1824, Royal Society of Arts (Great Britain), Transactions, Volume 42, page 88, I have had a chuck of this kind made in brass with the cones of iron, but it is cumbrous and expensive, and does not answer so well, owing to the surface of the iron offering less resistance to the work turning within it. This, perhaps, might be remedied by roughing; but I think the chuck is much better in wood, as it can be made by any common turner at a trifling expense, and possesses more strength than can possibly be required."

noun

• (dialect, obsolete) A chicken, a hen.
• (slang) A friend or close acquaintance; term of endearment.
  "Are you all right, chuck?"

verb

• (obsolete) To chuckle; to laugh.
  "Who would not chuck to see such pleasing sport. To see such troupes of gallants still resort unto Cornutos shop."

noun

• (informal) A casual throw.
• (cricket, informal) A throw, an incorrect bowling action.
• (slang) An act or instance of vomiting.
• (music) On rhythm guitar or mandolin etc., the muting of a chord by lifting the fretting fingers immediately after strumming, producing a percussive effect.