a penis. A imperfect contraction of "man banana".
L: I think I need the bamana tonight.
J: Let's go, baby!
by ellarjay February 19, 2011
Top Definition
A banana with a Bowl Cut.
"Wow, I just bought a nice Bamana!"
"Woah, dude!"
by kljgbdjgjfkljljgvdlkjgvfs May 15, 2012

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