society > leisure > entertainment > pastimes > game > billiards, pool, or snooker > [noun] > ball > ball of specific colour > in snooker (3)
A pink ball in snooker and some related games.
A yellow ball as used in snooker, pool, and similar games.
Snooker. Any of the six higher-value coloured balls (yellow, green, brown, blue, pink, and black). Contrasted with red, n. 12.