Resistance of a material to local plastic deformation
Diamond has a greater hardness than any other natural material.
by Douglas Cheaterson October 09, 2007
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"Last party we went to had a bunch of bitch-beers and no hard A."
by shackledxdollie November 20, 2004
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Long Dong Silver could never get a real hard on, because his penis was so long.
by Jorge December 06, 2002
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When the penis is aroused and expands to it's full length
Kiersten : Mmmmmmmm! Mmmmmmmm!
Chad : Mmmmmmmmm! Mmmmmmmm!
Kiersten : I do love kissing you Chad and it makes you get A Hard On would you like a blowjob?
Chad : Yes Please!
Chad : Ahhhhhhhhhhhhhhhhhh! Ahhhhhhhhhhhhhhhhh! Ahhhhhhhhhhhhhhhh!
Chad : You know this reminds me of the other day when me and Jim were kissing we got Hard On's and took turns sucking each other's dicks!
Kiersten : Reallly I just gave you an amazing blowjob and your going to talk about your gay experience with Jim.
Chad : I'm not gay I'm bicurious!
Kiersten : Well sounds like your gay to me!
Chad : I gotta go Jim want's me to take A shower with him!
Kiersten : GAY!
Chad: Bicurious!
by SlopNChop March 07, 2017
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1. Hard (n) ghetto slang for crack cocaine

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2. Hard (adj). Gangster slang for Awesome, cool, amazing. Also "to go hard"
1.Ex: "Wayne does smoke hard sometimes when times get tough"

2.Ex " yo darion this beat you sent me is hard!as fuck(sup.)

Or " yo darion this beat go hard!as fuck(sup.)
by Dang8701 April 16, 2016
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