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8.
1. Defined as a plural noun for a group of imbeciles, cretins, idiots, fucktards, morons, Bedfordians etc. Any group of people of a generally fuck-witted nature.

2. Pussii (from the plural of pussys, which is a bit of an ugly word)

3. Anyone predisposed in a western, liberal democracy (presuming of course, that the majority is always correct?). To vote for anyone on the basis of anything they are 'informed of' by the media/text message from their mate (a big brother watcher!).
"Look at those bufoniform weirdos, what a bunch of twats"...said by a train passenger when approaching Bedford (England) train station.

got offered a twosome last night by the missus, problem was she invited her mate from Bedford so I had to turn it down due to one half of it being beastiality...Shame would have been a nice "twat fest" otherwise.

"I voted for Tony Blair"!

by STePPeNWoLFe September 19, 2006
 
9.
Someone who writes a very long definition on urban dictionary.
Damn, I only wanted to know what a cleveland steamer was, I didn't want a whole fucking essay. What a right twat!
by Jonjo O'Rizzle January 26, 2008
 
10.
Crude slang for female genitalia.
Who would you check out the twat on her?!

Man that is one hair twat!
by THE FISHMAN April 18, 2004
 
11.
in addition to all its other obvious meanings, "twat" is also the past pluperfect subjunctive for a post on Twitter, also called a "tweet."
guy 1: "dude, have you been tweeting at all today?"

guy 2: "you moron, if i had twat, you would have gotten it."

bill clinton: "you losers. i have twat all the time."
by stuku April 29, 2009
 
12.
1. Slang for vagina.
2. A bitch.
3. Synonym for cunt.
Drew Barrymore is such a twat, but she keeps getting movie roles.
by nvalley July 10, 2008
 
13.
The hairy thing between a womans legs.
There once was a girl named Louise, whose cunt hair hung down to her knees, the crabs in her twat tied her hair in a knot and constructed a flying trapeze.
by Timmy Leary June 13, 2008
 
14.
Slang word for a vagina
Jeremy Clarkson is correct in thinking that Piers Morgan is a complete twat.
by leahcim99 November 02, 2013