The number of times it takes to post this exact definition on Urban Dictionary before it gets accepted
Social experiment: How many times do you need to post this exact definition to Urban Dictionary before it gets accepted? One!
by America Lover 🇺🇸 December 8, 2018
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Can be used as 'goodbye' or 'later'.
Short for "One Love"
by nati May 24, 2003
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To close out a meeting, dialogue or some instance of communication with another/others by equating this term with "take care."
"Ayight man, I'm bout to bounce, I'll holla at you later. One."
by Aaron August 5, 2003
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Regarded by many as the best Metallica songs. The song portrays a young soldier who is returning from war, suffering massive damage from a landmine. He cannot speak, he cannot move, he is essentially a head with no body.

Metallica did two versions of this song originally, the original and the rare version. In the rare version, during the long instrumental sections it is filled with speaking, the speaking of the soldier in his mind, the doctors, and his father. The boy pleads for his father to kill him, the doctor realizes the mistake of taking this patient and making him live through this "hell".
by Aaron March 6, 2005
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A unit of sex, although with no concrete definition. This can be given or slipped.
"Have you seen that Kate Moss. She's got tits like fried eggs but I'd certainly slip her one."

Mario: "How many marks would you give Princess Peach, out of two?"

Luigi: "Hmm. I'd give her one."

by HMB July 12, 2003
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A very ugly female. According to the 0-10 female grading scale.
(Ugly girl walks past)

Dude #1 to Dude #2: "ONE"
by C-RY LAX March 10, 2009
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