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(noun/slang) Complimentary slang name referring to an attractive, thick female whose attributes (i.e. ass, thighs, legs, etc.) are proportionally large, noticable, and desirable. Though not a law, such females can weigh in at the neighborhood of 200+ lbs.
April was a hunka-hunka burnin' love. That thunder-butt gal had a body that could ride your dick into the ground.
by Nikki Stixx September 19, 2019
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Jun 14 Word of the Day
Referring to women who are sexually or romantically attracted to other women. Applies to both lesbians and bisexual women, as it is only the same-sex attraction that matters, not any other attractions the women may have.

Originates from the Greek poet Sappho, a bisexual woman from the Isle of Lesbos, from which we get the term lesbian.
The sapphic women greatly enjoyed each others company.
by whatisdead June 25, 2015
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2
1. A gigantic, flabby, asymetrical, disgusting ass. Resembles a thundercloud due to its shapelessness, constant shifting, and that it strikes terror in the hearts of small children. Has been known to nuetralize erections and make beer taste flat.
2. A fart that echoes for at least 3 seconds.
1. I almost threw up when I saw that thunderbutt!
2. That thunderbutt was fucking nasty!
by Admiral Anarchy October 21, 2009
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3
A person (usually a woman) who's ass is so massive that when she walks her ass creates a thunderous rumble that frightens everyone around her.
Daaaaaaamn that womans ass is HUGE. She's got a Thunderbutt
by logicalkaos September 05, 2011
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