(Britain, Australia) A weapon made of metal worn around the knuckles that strengthens the impact of a punch; brass knuckles.

A weapon consisting of a metal reinforcement for the clenched fist, with finger holes molded in.

(idiomatic) Causing fear, excitement, apprehension, suspense, or nervousness.

(transitive) To endure despite feeling terror, fear, apprehension, anxiety, discomfort, or torment.

(slang) A punch to the face, especially to the mouth.

(derogatory) Holding beliefs or having attitudes that are primitive or uncivilised.

(vulgar, slang, derogatory, Australia, New Zealand, UK) Term of abuse.

Alternative spelling of fuck-knuckle

(Britain, informal) Risqué, sexual, suggestive of impropriety.

(idiomatic, often derogatory) A large, strong, and rather dimwitted person.