People who have committed Murder One, or murder in the first degree. Colloquialised to mean any killer, hit man or hardened killer.
P1: Man, who the hell are those guys on the corner?
P2: Don't ask or mess with them... they're Ones!
P2: Don't ask or mess with them... they're Ones!
by Mad Mofo September 15, 2007

by Anonymous August 6, 2003

The one for me.
They will always be in my heart
They have changed my life
She bettered me
She is perfect and I don't know what I would do without him.
They will always be in my heart
They have changed my life
She bettered me
She is perfect and I don't know what I would do without him.
by jaela jae June 23, 2021

dfinition - a person that you are friends with. The slang word is used very often by the Olin Block Family Gang in South Arkansas.
what up one?? where the hoes at one??
by A-STATE RIDER March 8, 2009

by C!NO August 20, 2009

"one is the loneliest number that you'll ever do"
Brian: That girls ugly i give her no more than a 3
Andy: She have boobs and a vagina? Shes a one in my book
Brian: That girls ugly i give her no more than a 3
Andy: She have boobs and a vagina? Shes a one in my book
by JRo June 19, 2006
