Definition of suit:
(n) :
the attempt to gain an end by legal process; a process instituted in a court of law for the recovery of a right or claim; a
lawsuit; the act of following or pursuing;
pursuit,
chase
"if you take my advice, you'll file suit against him immediately."
(v) :
to
fit; to
adapt; to make proper or suitable; as, to suit the action to the word. --Shak; to be fitted to; to accord with; to become; to befit
"ill suits his cloth the praise of railing well. --Dryden."