it is come from french of yore where it was earlier disport or desport

'Disport' is an old-fashioned word that means:

VERB

1) to play in a carefree manner; frolic; gambol

2) to wear clothing in an ostentatious manner; don; show off

NOUN

1) carefree play

2) a particular pastime, game, or sport

frolic, lark, rollick, skylark, disport, sport, cavort, gambol, frisk, romp, run around, lark about

Here is the etymology of the word sport from dictionary.reference.com:

"to take pleasure, to amuse oneself," from Anglo-Fr. disport, from Old French desport "pastime,recreation, pleasure," from desporter "to divert, amuse, please, play".

To roll one's self about, as in mire; to tumble and roll about; to move lazily or heavily in any medium; to flounder; as, swine wallow in the mire., To live in filth or gross vice; to disport one's self in a beastly and unworthy manner., To wither; to fade., To roll; esp., to roll in anything defiling or unclean., A kind of rolling walk.