(business, commerce) Someone not directly involved in a transaction; an entity beyond the seller (first party) and customer (second party).

The particular green party of a country or region.

(law) The party in a civil lawsuit whom the factfinder determines to be right, and who, in some jurisdictions, may recover attorney's fees and other expenses associated with the prosecution or defense of the lawsuit.

A party at which cocktails are served.

(colloquial, derogatory) A college, university, or any institution of higher learning in which there exists a culture of ribaldry and licentiousness amongst the student population.

The bride and groom as well as the bridesmaids and groomsmen at a wedding.

(slang, derogatory) A gathering with many more men than women.

A bus, often, a converted school bus, or other large vehicle used to transport large numbers of people to strip clubs, taverns and other party spots.

plural of prevailing party

A shallow flat receptacle with a raised edge or rim, used for carrying, holding, or displaying appetizers. / Such a tray with prepared appetizers arranged on it.