Of or relating to someone (a first party) directly involved in a given transaction, such as a buyer or seller. / Of or relating to the plaintiff in a lawsuit.

(US) A small gift given to a guest at a party, as a souvenir. / (informal, euphemistic) A narcotic, particularly an amphetamine, to be shared at a gathering.

A cylindrical blowing device that consists of a mouthpiece, which may or may not be a whistle, attached to a coiled tube of paper, given to guests and used at large celebrations especially New Year's Eve, or birthdays. When the mouthpiece is blown into, the paper tube unravels and a humorous festive noise is produced.

(Australia) A small meat pie intended as a party snack.

Of or pertaining to two or more political parties.

(informal) One who dampens fun; especially, one who declines to participate in or enjoy a party or some other group activity; one who does not agree with the opinions of a group.

plural of war party

A group of people assembled to carry out a military attack.

plural of boarding party

Politics that is dominated by rivalry between political parties