hi-def

1.being really fresh, cool, or noticable in a popular or in attractive clothing.
2.well known and respected.
louis vuitton bag, gucci shoes, and polo shit he's in hi-def right now.
by Universal The Untouchable February 19, 2008
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def sex

Some couple have abc sex - anniversary, birthday, christmas. After that comes DEF sex - don't ever f*ck.
My husband works nights, so we have DEF sex.
by Hurricane5 September 01, 2015
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def whore

short for definition whore.
1. someone engaged in definition whoring
2. someone who logs on to UD to write a retarded definition about their girlfriend/boyfriend, cat, character in a videogame, etc. that wastes the editors time and delays the approval of more worthy definitons.
shut up you goddamned def whores. no one cares about the retarded antics of your level 60 paladin and "his amazing ability to heal people"
by commustar July 21, 2007
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high def

a: "are u a douchebag?"
b: "high def"
by Charles yeah yeah yeah April 08, 2006
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Def Leppard

The act of having a threesome with a mother and daughter (of legal age, of course). Named for the rock band, Def Leppard, who were rumored to have bedded more than one mother/daughter duo during their heyday.
Did you see Danielle's mom? Yeah, I would totally pull a Def Leppard on those two.
by JETFLIP May 17, 2014
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Def Noob

someone on runescape who sucks cause there defence is to high such as angelpwner
someone whos defence level is to high example angelpwner/mac person 1 says "yo angelpwner blows" person 2 says "ya hes a deffy" the word def noob is from the latin orgin
by Twink lover3 July 11, 2008
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most def

(coming from "most definently")...meaning you strongly agree with someone else offer
Yo id rip that girl wide open...

Oh most def...most def
by bt June 21, 2005
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