Someone who seems to have multiple personalities, or is two-faced.

Derived from the Trill species in the fictional Star Trek universe, in which a host's personality changes when merged with a symbiont.
"Dude, she was all over you last night, now she's being a major bitch. What's the deal?"
"She's fucking trill."
by Meus Nex October 24, 2008

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The first ones that said it was UGK from Port Arthur, Texas. There was an Apartment Complex named Trill Villa down in the hood there.
DJ-DMD "yeah, nowadays it seems everybody and they momma... wanna be trill. shit... niggaz don't even know what the fuck that shit means.... that's a P.A. Term mutha fucka!"
by burble07 September 06, 2007

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A fictional culture in Star Trek. True Trills consist of a humanoid host and a worm-like symbiote that lives inside the abdominal cavity. There are at least two traditional host species; other races such as Humans can only serve as a temporary hosts with medical assistance.

The host has the benefit of the symbiote's lifetime of wisdom and experiences through several previous hosts. Each symbiote has its own name, which becomes part of the host's identity. Joined trills have unique personalities blended from both beings.
Star Trek DS9 had two Trills among the main characters. Both Ezri and Jadzia were joined to Dax.
by gooberliberation October 24, 2005

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Trill: extremely intoxicated.

Some guys at in the barracks in Mannheim (Germany) refered to getting shit-face-drunk as being "trill as fuck" or simply "trill".
"Yo dawg, you see brutha man over there hit'n dat bottle? He trill as fuck!"
by Kawanza Hut October 18, 2007

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A species from Star Trek: Deep Space Nine.
(There is one episode of ST:TNG where there's a Trill too.. heh)
Jadzia Dax is my favorite Trill.
by NobleArc February 25, 2004

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to keep it real , do what you want to do no matter the conciquences
Trillville keeps it trill by whateva tha means possible!
by white crunk January 17, 2005

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To give a blowjob to a guy while driving, when there are three girls in the back seat watching on at these events.
Damn girl, i can't believe you just gave that guy a Trill!
by jkslol August 29, 2006

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