Top Definition
Colloquial; Synonym for hot bi babe or HBB, often derogatory, condescending, or ironic. A bisexual person, usually though not always female, who is willing to join an existing couple, often with the presumption that this person will date and become sexually involved with both members of that couple, and not demand anything or do anything which might cause problems or inconvenience to that couple.

The term is often used to be dismissive of a couple seen to be only superficially polyamorous. Because of the demands that this type of couple places on the woman (that she be single and not take on any additional partners, and become involved with both members of the couple equally, and often "complete" their family as a surrogate mother and housekeeper and/or breadwinner and not do anything that may threaten or disrupt the existing couple), many in the poly community call this type of woman a "unicorn", as in mythical and not likely to be found, even though there are plenty of bipoly women around.

Sometimes the unicorn is expected to not develop any emotional attachment and is strictly there for a sexual relationship (equally distributed to both members of the dyad) and/or is prescripted as a secondary. This term is used as a reminder that bipoly women are people with their own desires, needs, and pre-existing lives, and not fantasy figures or pets. See related prescriptive vs. descriptive.
John wants a single, attractive woman who will love and have sex equally with him and his wife, but not interfere with their marriage, move in together, help raise their kids but not have any of her own, and not have any other partners. He's looking for something that doesn't exist - he's looking for a unicorn!
by Joreth April 08, 2010
a horse with a horn stuck on his head
when drunk randomly putting a snooker cue 2 ur head and randomly sayin "im a unicorn" here by creating the still existant and popular sayin of currie high school
In Harry Potter
"im a unicorn!"
by random_bulldog November 03, 2003
you know when u get a report card and ur teacher gave u a "U"? Well it stands for unicorn, as D stands for dolphin.
"no mother i did not get an unsatisfactory grade on my report card u must have mistaken it, i got a unicorn on my report card."
by Rosa February 27, 2004
Tasty with A1 sauce, grilled over an open flame.
Mmmmm, this Unicorn is very tender.
by Moose September 23, 2003
A lesbian.
They are wanted by men but mainly unattainable.
"Jen is so hot...too bad she's a unicorn."
by Kippie November 01, 2006
someone that makes you horny (only applies to males)
by Anonymous May 27, 2003
when two lesbians are goin at it and one of them attaches a strap on to her head and starts raming the other like a lesbian with a strap on stickin out of her forehead does
Damn look at those sister's, mommy's expedition is unicorning dog.
by I found god DAWG May 03, 2003
1.a pretty horse with a horn on its head. single pease of corn.
3.a unitard made of corn that you can do interperate dances in.
1.omg it's a unicorn!!!
2.drats someone just ate the last unicorn!!!
3.Brittany looks mighty fine dancing in her unicorn.
by chelsea n. h. July 01, 2006

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