n (context|vulgar|colloquial|countable) The female genitalia, especially the vulva.
n (context|vulgar|offensive|colloquial|countable) An extremely unpleasant or objectionable person (in US, especially a woman; in UK or Ireland, more usually a man).
n (British|NZ|vulgar|colloquial|countable) An objectionable object or item.
n (British|Australia|Ireland|NZ|Scotland|vulgar|colloquial) An unpleasant or difficult experience or incident.
n (context|vulgar|colloquial|countable|and|uncountable) A woman, women, or bottom as a source of sex.
n (Australia|New Zealand|British|vulgar|positive|colloquial|countable) A person (mostly between male friends); compare bastard.