Noun grappler has 2 senses

• grappler(n = noun.person) matman, wrestler - combatant who tries to throw opponent to the ground; Array
has particulars: bantamweight, featherweight, flyweight, heavyweight, light heavyweight, lightweight, middleweight, sumo wrestler, welterweight
is a kind of battler, belligerent, combatant, fighter, scrapper
Derived form verb grapple₂

• grappler(n = noun.artifact) grapnel, grapple, grappling hook, grappling iron - a tool consisting of several hooks for grasping and holding; often thrown with a rope; Array
has particulars: crampon, crampoon
has parts: claw, hook
is a kind of tool