subs. (old).A lying-in; BUST-UP; EXPLOSION.GROSE (1823).
Verb. (old: public school).See quot.
1865. G. F. BERKELEY, My Life and Recollections, i. 129. I had [at Sandhurst about 1815] to undergo the usual torments of being LAUNCHED, that is, having my bed reversed while I was asleep; of being thrown on the floor on my face, with the mattress on my back, and all my friends or foes dancing on my prostrate body.