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_. Often used in email addresses in place of a space between words.
mike: whats your email?
bob: bob underscore smith @yahoo.com
by JoeyJoeJoeJr. Shabadoo February 04, 2007
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2
It's that line you use that goes below the letters. You probably only use it for emojis, but it is also used in place of a space
^_^

^Underscore
by Leon Rhinehart January 04, 2015
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3
Often referring to a woman's private area also known as the beaver, roast beef curtains, or the muff.
It was at least 100 degrees that hot summer night, so she thought she would dip her underscore in the cool lake water.
by kkggirl December 17, 2007
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4
not quite the same as score, but just underneath.
Not the best outcome but the second best.
James: i came second in a race today.
Bobbie: Underscore

Oliver: i had sex with the miss universe runner up lastnight.
James: Underscore
by BobbieDigital May 19, 2008
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6
Something completely overused in usernames for Instagram or Twitter when the username you already had in mind is taken.
Drew- drewsmith2500 is already taken...I'll just use some underscores... drew_smith_25_00...yep, that'll work!!!
by not_mainstream March 12, 2014
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7
swiping the underwear of someone who removed them when you just had sex with them
after we got it on, i underscored his hot sweaty briefs and he had to run off commando
by underfreek November 11, 2007
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