One who is attracted to men, women, and horses. Often a person who has failed with both genders opts to be a trisexual so that they can make love to a horse while also being able to date if the time ever comes. Bestiality and bisexuality in one ugly mesh.
Trisexual:

I loves my man.
I loves my woo-man.
I loves my horse.
by beastmeisterman October 10, 2005
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a person whom shall have a sexual experience with a: man, woman, or horse.
Sean Connery f***ed a horse last night. What a trisexual freak!
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having a vagina, penis, and a cloaca.
she is more than a hermaphordite she is trisexual.
by trisha west October 23, 2007
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you will do men, women, and things
my friend nick once told me that he had sex with a man, a women, and a vcr.......so in other words, he is indeed trisexual
by Da Kwiean February 23, 2008
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Some one who is attracted to men, women, and those in the LGBT community.
"Why is Andrew dating that lesbian?"
"Because there both trisexual"
by Alica loves to define September 22, 2014
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A person who has THREE genders,normally male, female, and a plant, mineral, or an object, like a seat on a school bus.
trisexual person: I like having sex with this seat!!!
male: So, your a bisexual?
trisexual person: Im a girl too, so i guess im "TRISEXUAL"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
by SaltySavag 999 April 11, 2018
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