Entry 2 senses · 2 variants Webster, 1913 Rapid-fire · Rap·id-fire · IPA a. a. 01 a. Firing shots in rapid succession. 1. Firing shots in rapid succession.(Gun.) 02 a. Occurring in rapid succession like the shots fired from a machine gun. See also machine-gun. 1. Occurring in rapid succession like the shots fired from a machine gun. See also machine-gun. See: machine-gun