noun
A stringed musical instrument (chordophone), usually with a round body, a membrane-like soundboard and a fretted neck, played by plucking or strumming the strings.
Any of various similar musical instruments, such as the Tuvan doshpuluur, with a membrane-like soundboard.
(slang) An object shaped like a banjo, especially a frying pan or a shovel.
(UK, Dagenham) A cul-de-sac with a round end.
(mining) A miner's round-nosed shovel.
(Malaysia) An egg sandwich fried on a flattop and served in a bun as would a burger, ellipsis of egg banjo.
(slang, vulgar) The frenulum of the penis.
verb
To play a banjo.
(transitive, slang, British) To beat, to knock down.
(transitive, slang, British, military) To shell or attack (a target).