subs. (pugilistic).1. A thrashing. See MUG, verb., sense 1.
2. (public schools).Hard work.
3. (theatrical).See MUG, verb., sense 2.
1871. London Figaro, 17 March. A collection of judicious and injudicious gags might prove as edifying as a selection of good and bad performances; although, on the whole, it is a dangerous custom, and one which is assuredly more honoured in the breach than the observance. Judicious MUGGING is, perhaps, the more harmless of the two.