#antiaircraft_gun__antiaircraft__flak__flack__pom-pom__pompom__ack-ack__ackack__ack-ack_gun__ackackgun  artillery designed to shoot upward at airplanes
  supertype:  gun  a weapon that discharges a missile at high velocity (especially from a metal tube or barrel)
  subtype:  Bofors_gun  an automatic double-barreled antiaircraft gun
  part:  predictor  a computer for controlling antiaircraft fire that computes the position of an aircraft at the instant of a shell's arrival

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