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n. A dangerous blast of hot air behind a rocket or missile when it is fired.

n. backfire from a recoilless weapon

"The instructor told him to make sure no one was behind him before he fired the weapon sends out a powerful backblast."

backfire    blowback   

backbeat    backcast    backlash    backlist    backslash   

free-fire    quake-hit    no-go    interfacial    firer