Top Definition
a combination of the words "total" and "bonus", referring to something unexpected, and great.
Person 1(excited): "Dude! I just found five bucks!"
Person 2(excited, yet jealous): "TONUS!"
by SarahBursey August 18, 2006
1 more definition
8 Words related to tonus
A limited edition, rhino-like neopet on www.neopets.com
My Tonu is named The_Tonu.
by Alexi October 14, 2003

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