an athletic activity requiring skill or physical prowess and often of a competitive nature, as racing, baseball, tennis, golf, bowling, wrestling, boxing, hunting, fishing, etc.

a particular form of this, esp. in the out of doors.

diversion; recreation; pleasant pastime.

jest; fun; mirth; pleasantry

What he said in sport was taken seriously.

mockery; ridicule; derision

They made sport of him.

an object of derision; laughingstock.

something treated lightly or tossed about like a plaything.

something or someone subject to the whims or vicissitudes of fate, circumstances, etc.

a sportsman.

Informal . a person who behaves in a sportsmanlike, fair, or admirable manner; an accommodating person

He was a sport and took his defeat well.

Informal . a person who is interested in sports as an occasion for gambling; gambler.

Informal . a flashy person; one who wears showy clothes, affects smart manners, pursues pleasurable pastimes, or the like; a bon vivant.

Biology . an organism or part that shows an unusual or singular deviation from the normal or parent type; mutation.

Obsolete . amorous dalliance.

of, pertaining to, or used in sports or a particular sport.

suitable for outdoor or informal wear

sport clothes.

to amuse oneself with some pleasant pastime or recreation.

to play, frolic, or gambol, as a child or an animal.

to engage in some open-air or athletic pastime or sport.

to trifle or treat lightly

to sport with another's emotions.

to mock, scoff, or tease

to sport at suburban life.

Botany . to mutate.

to pass (time) in amusement or sport.

to spend or squander lightly or recklessly (often fol. by away ).

Informal . to wear, display, carry, etc., esp. with ostentation; show off

to sport a new mink coat.

Archaic . to amuse (esp. oneself). ?

sport one's oak. oak ( def. 5 ) .