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The part of the female genitalia that is comprised of the clit and the genital lips. When the lips have been parted, the lady's anatomy is quite like the appearance of an oyster.
Wow! Did you see the oyster on that chick in the movie? She had very large lips. And her oyster was very, very moist!
by The C MONSter August 18, 2007
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a seafood. Studies have proven that oysters contain a rare acid that 'makes you horny' by stimulating sex hormones
oysters should be in your sex lifes' diet!
by wakalakalover45 March 26, 2005
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Oyster is London’s travel smartcard. You can put your Travelcard or Bus Pass season ticket on it, add travel value (cash) to pay as you go or have a combination of both.

Oyster cards are also reusable. This means that when your ticket expires you can buy another on the same Oyster card, and when your travel value (cash) runs out, you can just top it up.
I used my Oyster to get to work today.
by TintinHerge July 19, 2006
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The slow accumulation of semen in a woman's underwear following a man's ejaculation inside of the vagina when she stands up after reapplying said underwear
1. Yeah, the sex was great but this oyster in my panties is absurd.

2. I've changed my underwear like five times but I get another oyster every step I take.

3. Bro if you wanna fuck that chick go ahead, but I'm pretty positive she has an oyster considering she has not been to the bathroom since we left the bedroom.
by Savvy and Twat March 18, 2014
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1. a glob of phlem

2. a blob of semen

3. the female genitals

(from the fact that these things are often slimy like an oyster)
an oyster sat on the middle of sidewalk, much to their disgust.
by The Return of Light Joker January 01, 2010
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