1. underhook - Noun
2. underhook - Verb
underhook (plural underhooks)
(wrestling, martial arts) A clinch hold performed by putting an arm under the opponent's arm, and holding the opponent's midsection or upper body.
underhook (third-person singular simple present underhooks, present participle underhooking, simple past and past participle underhooked)
(wrestling, martial arts, transitive) To use such a hold upon.