‘Any one ludicrously mischievous; a merry droll’ (Johnson); a habitual joker. (In early use often combined with sense 1) Phrase, to play the wag.

= ‘Fellow’, ‘chap’; also, a humorous fellow, joker, wag. Now commonly of a youth, with the epithet young, little; the wider application seems to…

Used jocularly, with possessive pronoun, as a title for a wag.

Scottish. ‘A wag, one who plays upon another’ (Jamieson).

A mischievous or troublesome person; a wag.

One who jokes; a jester; a merry fellow. Frequently in practical joker.

a person who engages in leg-pulling; a person who pulls another's leg; cf. leg-pulling n.