Snooker  —n. 1 game played on an oblong cloth-covered table with a cue-ball, 15 red, and 6 coloured balls. 2 position in this game in which a direct shot would lose points. —v. 1 (also refl.) Subject (oneself or an opponent) to a snooker. 2 (esp. As snookered adj.) Slang thwart, defeat. [origin unknown]