noun
(now only in slang) The head.
(cribbage) A jack of the same suit as the card turned up by the dealer.
(slang) The glans penis, the sensitive bulbous structure at the end of the penis also known as the head of the penis. (Also spelled knob.)
(by extension) (vulgar, slang, chiefly UK, Ireland) The penis; dick. (Also spelled knob.)
(by extension, derogatory) A contemptible person; dick. (Also spelled knob.)
(slang, chiefly UK, Ireland) A wealthy or influential person; a toff.
Obsolete form of knob (“rounded protuberance”).
verb
(slang, transitive) To hit in the head.