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1.
short for denomination, especially when it applies to a currency.
A fiver is a note of small deno.
by uttam maharjan November 21, 2011
 
2.
that little bit of poo left in the toilet that just wont flush!
"ahh fucks sake looks like we got a deno :/"
or

"OMG deno alert!"
by suchaburner October 02, 2011
 
3.
When something happens or goes wrong that is completely odd and not your fault, when something LAG's or Glitches.
(t.v goes off) omg my tele has jsut deno'd

(your phones goes funny) why is deno on my phone?

(your computer is going slow) deno is lagging my computer
by ljces1994 December 14, 2009
 
4.
Pertaining to a stereotypical rich almost eccentric person that has an odd style and look, but is under the impression that he or she is fashionable.
A man that crams three people into a two seater Nissan 350Z is a deno.

A man that buys a brand new BMW Z4 coupe and puts an obnoxious spoiler on the back.

Jamie Kennedy in Malibu's Most Wanted is a prime example of a deno.
by BOZZOnious January 07, 2008