knuckle up (English, verb)
expansion: knuckle up (third-person singular simple present knuckles up, present participle knuckling up, simple past and past participle knuckled up)
Senses:
qualifier: chiefly African-American Vernacular
glosses: To clench one's fist(s) as though in preparation for a fight.
tags: informal
glosses: To approach a problem aggressively.
tags: broadly
informal
glosses: To strike or fight.
tags: slang
Forms:
form: knuckles up
tags: present
singular
third-person
form: knuckling up
tags: participle
present
form: knuckled up
tags: participle
past
form: knuckled up
tags: past