knock in

Noun

 * 1)  The game of lanterloo.

Verb

 * 1)  To enter college after hours—after half-past ten at night when the doors have been locked.
 * 2)  To pot (a ball)
 * 3)  To score (a break)
 * 1)  To pot (a ball)
 * 2)  To score (a break)
 * 1)  To score (a break)