ETYMOLOGY
from French badin (as a noun – a light-hearted person, fool, idiot; also used to denote the fool or clown in drama), (as an adjective – light-hearted, cheerful, foolish, silly),
from Old Occitan badin, adjective and noun, from badar (to gape), from Latin badare (to gape) + -in (-ine)
EXAMPLE
“…Such a Badeen ne’er came upon the Stage,
So droll, so monkey in his play and rage;
Sprawling upon his back, and pitching pyes,
Twirling his head, and flurring at the flies.
A thousand tricks and postures would he show,
Then rise so pleas’d both with himself and you,
That the amaz’d beholders could not say
Whether the bird was happier, or they…”
From: Poems by Sir W.T.
By William Temple, 1670
‘Upon My Lady Giffard’s Loory’
Lexicophilia 