Definition of monkey boat in US English:

monkey boat

noun

  • 1Any of various kinds of small boat used as a tender, tow-boat, etc., especially in a port.

  • 2A narrowboat used on a canal.

Origin

Mid 19th century; earliest use found in Peter Simmonds (1814–1897), newsagent and journalist. From monkey + boat. The reason for the name is unclear: the etymology implicit in quot. 1993 at sense 2 has not been authenticated.

Pronunciation

monkey boat

/ˈmʌŋkɪ bəʊt/