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1.
When two people unite and everything possible with them two are beyond perfection. I.e. soul mates.
Look at that couple, bonana is all that can be said about them.
by bo n ana June 22, 2013
 
2.
Bo-nana

Refering to a banana in a sexual way
My bonana is sooooo tasty! Wanna lick?
by KARATAY February 25, 2005
 
3.
the name alyssa scoobs ] calls her BFF, jenna, aka BONANA.
" yes, that is bonana, she is my other half."
by Alyssa B && Jenna A October 27, 2007