when a guy is dancing behind an unknown girl , for example in a crowded disco or pub , and He is trying to put his pelvis as close,of the girl's bottom as, he can, following the rhythm of music while He is faking to dance.
Girl: She was onioning so hard on my ass last night! I thought it was gonna go numb!!
by SpanishUrbanBoy September 19, 2016
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"takin' orders is sunnin, an ounce of coke is an onion" R.I.P. BIG-L
by rasta-gangsta March 4, 2003
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Have layers; are like ogres
“Ogres are like onions, onions have layers, ogres have layers
by Moto Moto is god April 1, 2019
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1)an ounce of drugs :cocaine...weed...
2)a really phat ass on a chick that will make u cry if she ever let u hence "onion"
1)Ray Ray got knocked (busted arrested) w/ 2 onions.
2)Damn she got an onion booty!"
by Palmz aka Sir Octopus April 13, 2003
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an ingenius term popularized by men's ncaa basketball commentator bill raftery; used only at times when an indelible impression is left on the audience by a performer.

most notably, 'onions' was used to describe the incredible string of game-winning shots hit by syracuse guard gerry mcnamara.
'down to three seconds. . mcnamara with the runner at the buzzer. . . . . onions!!!!!!!!!!!!!!'
by jsny March 21, 2006
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a very nice ass on a hot chick
origin : ass is so fine it makes me want to cry (as an onion does)
damn! did you see the onion on that bitch?
by greg2112 June 26, 2002
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an ounce. (see zone)
i need bout an onion of dat purp.
by yay-town Cracklanta July 19, 2005
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