noun

• (law) A person or group of people constituting one side in a legal proceeding, such as in a legal action or a contract.
  "The contract requires that the party of the first part pay the fee."
• (dated, slang, vulgar or humorous) A person; an individual.
  "He is a queer party."
• (dated, slang, vulgar or humorous) A person; an individual.
  "I can't possibly be a party to that kind of reckless behaviour."
• (now rare in general sense) A group of people forming one side in a given dispute, contest, etc., or united in maintaining a cause, policy, or opinion in opposition to others; a faction.
  "A mile back in the forest the tribe had heard the fierce challenge of the gorilla, and, as was his custom when any danger threatened, Kerchak called his people together, partly for mutual protection against a common enemy, since this gorilla might be but one of a party of several, and also to see that all members of the tribe were accounted for."

verb

• (intransitive) To celebrate at a party, to have fun, to enjoy oneself.
  "We partied until the early hours."
• (intransitive, slang, euphemistic) To take recreational drugs.
  "“Miss, do you party?” the boy asked. “What?” Jennifer asked back. “Do you smoke? I'll get you some cheap. One American dollar equals forty Jamaican dollars. I'll get you as much of the stuff as you need.”"
• (intransitive) To engage in flings, to have one-night stands, to sow one's wild oats.
• (online gaming, intransitive) To form a party (with).
  "If you want to beat that monster, you should party with a healer."

adv

• (obsolete) Partly.

adj

• (obsolete, except in compounds) Divided; in part.
  "an escutcheon party per pale"
• (obsolete, except in compounds) Divided; in part.
  "Now converging, now diverging, these fences presented a striking irregularity of contour. No fence was party, nor any part of any fence."