volcanoe:
(noun) Canadian English, reported also
in Vermont. Meaning either "A canoe that has a strong tendency to upturning and ditching its load into the frigid waters of the Ontario while a chorus line of Mounties sings by" or "the act of forcing a
kayaker to do an involuntary
eskimo roll".
This word is a very rare compound (or portmanteau word) of Spanish and English, coming from the words volcar (to pour; to upturn) and canoe (a small craft, generally propelled with a paddle, typical of the New World).
See also pseudoetymology.