One

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!

288 up, 79 down

One

Can be used as 'goodbye' or 'later'.
Short for "One Love"

Joe: "see ya tomorrow"
Nikki: "one."

1022 up, 367 down

One

n. The loneliest number.

The loneliest number

1076 up, 483 down

One

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."

302 up, 164 down

One

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".

On "...and Justice for All."

376 up, 217 down

One

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."

89 up, 65 down

One

A very ugly female. According to the 0-10 female grading scale.

(Ugly girl walks past)


Dude #1 to Dude #2: "ONE"

23 up, 17 down