number one

shortest haircut a guy (or gal) can get.
check out that bogan with a number one!
by Squidling January 07, 2004
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one

A woman (or man) with whom the person in question would be willing to have sexual intercourse. See binary system.
Two men walk down the street and see a hot woman walking in the opposite direction:

Guy 1: "One."
Guy 2: "Hell yeah that's a one!"
by gc123 July 08, 2007
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wanna one

Wanna One is a south korean boy group under YMC entertainment through the hit survival show " Produce 101 season 2". the top 11 of these trainees make up Wanna One.

they are Kang Daniel(rank 1, "daddy", sexy and cute), Park Jihoon(rank 2, wink boy, jeojang), Lee Daehwi(rank 3, half of jinhwi, cute maknae), Kim Jaehwan(rank 3, high-note king, psychopath, Mr 2m39cm), Ong Seongwoo(rank 5, slate representative, funny guy), Park Woojin(rank 6, reversal charm, savage, official VJ, laughter that can kill), Lai Guanlin(rank 7, taiwan boy, "swaggy rapper", savage maknae), Yoon Jisung(rank 8, umma, fairy, *claps), Hwang Minhyun(rank 9, Nu'est, hwang CEO, appa, real life boyfriend), Bae Jinyoung(rank 10, other half of jinhwi, deep dark, tak tak), Ha Sungwoon(rank 11, HOTSHOT, immo, underrated visual, angel voice)
they will be making their debut on 7 August 2017 with their first mini album "1x1=1". they also will have a reality program called Wanna One Go which shows them in their dorm life as well as other challenges.
oh have you heard of the boy group Wanna One?
who is your Wanna One bias?
by Syerinssi July 31, 2017
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one drink

An amount of alcoholic drinks that is usually more than 5. Often higher than 10. But never less than 3.
“Would you like to come over tonight, I have beer?”
“Yes, but I can only have one drink, I have to work in the morning”
*next morning*
“What happened last night? I woke up on my bathroom floor with no clothes on, my kitchen looks like a war zone and my front door was open and my dog is gone”
by Jenrox April 10, 2018
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one putt

Task that is expected to be relatively easy but, if not done properly, can turn into an embarrassing nightmare.
CBS executives: “Here Dan – here’s the latest on the Bush Air National Guard story. The docs show Bush’s superiors thought he was a schmuck, too. This is a one putt story if I’ve ever seen one – run it tonight at 6.”
by workinglate April 14, 2005
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Do one

Slang for telling somebody to "Piss off"
by Simon February 21, 2003
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one direction

One Direction is a great band that has gone on a temporary hiatus. The One Direction fandom are called the Directioners. One Direction has become one of the biggest bands in the world. They were formed in 2010 on The X-Factor. One Direction is a great band because they gave money to charity, helped so many fans, they have wonderful voices, are just regular people and don't act like a celeb. snob, and they are very cute!!
The One Direction fandom, The Directioners are taking over the world in a good way and a bad way.
by all the love,K💕 April 01, 2019
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