Third-person singular simple present indicative form of party.
Wiktionary
Parties Sentence Examples
Parties and witnesses were put on oath.
Then they spend all their time at parties instead of studying.
We have a beautiful house and lots of parties.
Two parties had developed with the growth of the Church.
The prince, after vainly endeavouring to obtain the recall of the generals, restored the constitution with the concurrence of all the Bulgarian political parties (September 18, 1883).