One's spouse's parent.

Shining very brightly and directly at the face so that it is difficult to see because one is blinded by the light. / (figuratively) According to someone's subjective point of view.

(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) 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.

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