a male entertainer, as formerly employed by resorts in the Catskill Mountains, who combined the duties of a comedian, activities director, and master of ceremonies to keep the guests amused throughout the day.
any lively, prankish, or mischievous man.
< Yiddish tumler
one who makes a racket, stir, equivalent to tuml
) to make a racket + -er -er1
; compare Middle High German getümel
noise; see tumble