A single telephone line which is shared by two or more households. / The official policy of a political party or other organization.

A woman's dress that is too elegant, revealing, dressy or impractical for normal wear.

(idiomatic) A person known for frequent, enthusiastic attendance at parties, especially one whose partying behavior is exuberant or excessive.

(idiomatic) A person who participates in entertainment events in a very enthusiastic manner and who has a leading role in inspiring others to join in the spirit of festivity.

A woman, especially one who is young, who is known for her enthusiastic and frequent attendance of parties; a female party animal. / (euphemistic) A female prostitute.

(dated) A social gathering of men only.

(law) The plaintiff in a lawsuit. / (informal) The victim in a situation, the person treated unfairly.

(South African politics) Short for South African National Party. / (Australian politics) Short for National Party of Australia. / (New Zealand politics) Short for New Zealand National Party.

A group sex event where participants' car keys are randomly handed out, determining which couples will have sex.

(for children) Synonym of slumber party / (for adults) A party at which men wear pyjamas and women wear nightdresses (typically, there is a certain amount of sexual activity)