grappling hook

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a tool consisting of several hooks for grasping and holding;
often thrown with a rope
• Syn:
grapnel, grapple, grappler, grappling iron
• Hypernyms:
tool
• Hyponyms:
crampon, crampoon
• Part Meronyms:
hook, claw