Definition of banjo-uke:
(n) :
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.
(n) :
Any of various similar musical instruments, such as the Tuvan doshpuluur, with a membrane-like soundboard.
(v) :
To play a banjo.
(n) :
(slang) An object shaped like a banjo, especially a frying pan or a shovel.
(n) :
(slang, vulgar) The frenulum of the penis.
(n) :
(mining) A miner's round-nosed shovel.