D defs.my
Entry 1 sense Webster, 1913

Sortie

/sôr'-tē/ · Sor·tie · IPA /ˈsɔɹti/
01 n. The sudden issuing of a body of troops, usually small, from a besieged place to attack or harass the besiegers; a sally.
  1. 1.
    The sudden issuing of a body of troops, usually small, from a besieged place to attack or harass the besiegers; a sally.(Mil.)