Definition of advance party in English:

advance party

noun

  • 1Military
    Military a body of troops sent out in advance of the main body of an army.

  • 2Generally Generally a group sent out in advance of any larger body of people, in order to carry out reconnaissance, preparatory work, etc.

Origin

Late 17th century; earliest use found in James Shirley (bap. 1596, d. 1666), playwright and poet.