Definition of "Buff" :

noun: an implement consisting of soft material mounted on a block; used for polishing (as in manicuring)

noun: a medium to dark tan color

noun: bare skin

"Swimming in the buff means to swim naked."

noun: an ardent follower and admirer

noun: a soft thick undyed leather from the skins of e.g. buffalo or oxen

verb: polish and make shiny

"Buff the wooden floors."

verb: strike, beat repeatedly

"The wind buffeted him."

adjective: of the yellowish-beige color of buff leather