Top definition
A fucken bra. For someone with big tits, or "Shoulder boulders".
"Hey, that girl just removed her boulder holder and I saw her norks."
by Grant Nicholas March 12, 2004
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2
What a female would use to hold up very large breasts, industrial strength.
Janice mentioned that her extra large breasts can only be held up by a boulderholder.

I think Janice's boulderholder is also bulletproof.
by thatguy011071 January 12, 2010
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3
boys or mens cotton briefs underware
John was walking around in his boulder holders today.
by Deep Inurass September 09, 2005
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4
"Mary was walking around the mall with her boulder holder hanging right out of her shirt."
by Browneyedgirl413 July 03, 2013
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