Definition of clinches:
(v) :
To make certain; to finalize.
(v) :
To hold firmly; to clench
(v) :
To hold a boxing opponent with one or both arms so as to avoid being hit while resting momentarily
(v) :
To secure a spot (e.g., at the divisional championship) before the end of regular season play by having an insurmountable lead.
(v) :
To clasp; to interlock.
(v) :
To embrace passionately.