(English billiards) When one's cue ball strikes some other ball and causes that other ball to sink into a pocket. If the sunken ball is the red ball then one scores three points, but if the sunken ...

(biology) A form of aposematism in which a prey organism has conspicuous colors which function in deterring predators from consuming it.

(Oxford University, informal) Ellipsis of Balliol College, Oxford..

Indicating that it is the time of year around Christmas, and that things associated with that time period are happening or likely to happen.