blowback

Etymology
Deverbal from.

Noun

 * 1)  A type of action where the pressure from the fired cartridge blows a sliding mechanism backward to extract the fired cartridge, chamber another cartridge, and cock the hammer.
 * 2) An unintended adverse result, especially of covert political action.
 * 3)  The act of shotgunning (inhaling from a pipe etc. and exhaling into another smoker's mouth).
 * 4)  On a steam locomotive, the reversal of exhaust gases when the regulator is closed without using the blower.
 * 1)  The act of shotgunning (inhaling from a pipe etc. and exhaling into another smoker's mouth).
 * 2)  On a steam locomotive, the reversal of exhaust gases when the regulator is closed without using the blower.
 * 1)  The act of shotgunning (inhaling from a pipe etc. and exhaling into another smoker's mouth).
 * 2)  On a steam locomotive, the reversal of exhaust gases when the regulator is closed without using the blower.
 * 1)  On a steam locomotive, the reversal of exhaust gases when the regulator is closed without using the blower.
 * 1)  On a steam locomotive, the reversal of exhaust gases when the regulator is closed without using the blower.

Translations

 * German: Rückdruck