Real Dictionary

snooker
uncountable noun: Snooker is a game involving balls on a large table. The players use a long stick to hit a white ball, and score points by knocking coloured balls into the pockets at the sides of the table.

snooker in American English
a variety of the game of pool played with fifteen red balls and six other balls
to make a direct shot impossible for (an opponent in snooker)
noun: a variety of pool played with 15 red balls and 6 balls of colors other than red, in which a player must shoot one of the red balls, each with a point value of 1, into a pocket before shooting at one of the other balls, with point values of from 2 to 7
transitive verb: to deceive, cheat, or dupe

snooker in British English
to leave (an opponent) in an unfavourable position by playing a snooker
noun: a game played on a billiard table with 15 red balls, six balls of other colours, and a white cue ball. The object is to pot the balls in a certain order