buff

The definition of buff is slang to describe a muscular person.

(adjective)

An example of buff is Jillian Michaels, the celebrity personal trainer.

Buff means to smooth, clean or shine by rubbing.

(verb)

An example of to buff is using a many textured foam block to smooth and shine finger nails.

A buff is a person who is a big fan of or knowledgeable about something.

(noun)

An example of buff is someone with their house decorated in David Lynch film posters.

See buff in Webster's New World College Dictionary

noun

a heavy, soft, brownish-yellow leather made from the skin of the buffalo or from other animal hides
a military coat made of this leather
1. a stick or small block covered with leather or cloth, used for cleaning or shining
2. buffing wheel
a dull brownish yellow
☆ Informal a devotee or enthusiast, as of a particular area of interest: a jazz buff

Origin: earlier buffe, buffalo < Fr buffle < It bufalo, buffalo

adjective

made of buff
of the color buff
Slang physically, often sexually attractive, as by being pleasingly fit and muscular or having a sexually desirable figure

transitive verb

noun

a blow

Origin: ME & OFr buffe: see buffet

transitive verb

to lessen the force of

intransitive verb

to be a buffer

See buff in American Heritage Dictionary 4

noun

A soft, thick, undyed leather made chiefly from the skins of buffalo, elk, or oxen.
A military uniform coat made of such leather.
A pale, light, or moderate yellowish pink to yellow, including moderate orange-yellow to light yellowish brown.
Informal Bare skin: swimming in the buff.
A piece of soft material, such as velvet or leather, often mounted on a block and used for polishing.

adjective

Made or formed of buff: a buff jacket.
Of the color buff.
buff·er, buff·est Slang Having good muscle tone; physically fit and trim: buff athletes lifting weights at the gym.

transitive verb buffed, buff·ing, buffs