(uncommon) Alternative form of when in Rome, do as the Romans do

(colloquial) To make a show of bravery despite one's fears; to put on a brave face. / (idiomatic, US) To speak of something despite having little knowledge of it.

(sports, billiards, snooker, pool) In the area behind the baulk line in cue sports.

(snooker, pool) To pot the cue ball accidentally after hitting the object ball.

(snooker, pool) Of the cue ball: (going) into a pocket, after cannoning another ball.

(snooker, pool) The situation where the cue ball goes into a pocket after striking the object ball.

To enter something quickly, usually a mode of transport. / To join in on an activity quickly. / To interrupt someone while they are speaking.

(transitive, idiomatic) To consider, to contemplate, to intend.

To become involved or associated with (especially a group of people)

In the general case; without further assumption; without qualification; in all respects. / As a rule; usually.