Top definition
An ugly person who has a lack of personal hygiene and/or has had alot of sexual partners. Usually used to describe females.
1. Nick: "Did you shag that bird last night mate?

Dez: "Yes mate! She was a reight ratter!"

2. "Stay away from her mate, she's a right ratter."

3. "Errrrgh....You Ratter! Dirty rat-bag!"
by BabyWildins January 11, 2010
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2
fuckhead, wanker, shithead, mainly someone that pisses you off
your a ratter!
by kim August 18, 2003
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3
a ladies sexy part, where babies come from. often used by australian teenagers.
example 1: mate, did you see michelles ratter the other night! phwoar, looked like a second arsehole.

example 2: my ratters not been right since someone ryan o'leary'd it, tried a hot bath, just bled.
by ricky cranckshaft 118 May 19, 2009
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