
1) Blowup 2) Detonation 3) Explosion 4) Firearm action 5) Firearm terminology
Found on
https://www.crosswordclues.com/clue/blowback
[firearms] Blowback is a system of operation for self-loading firearms that obtains energy from the motion of the cartridge case as it is pushed to the rear by expanding gases created by the ignition of the propellant charge. Several types of blowback systems exist within this broad principle of operation, each distinguished by the level of...
Found on
http://en.wikipedia.org/wiki/Blowback_(firearms)
[forensics] Blowback in forensics refers to vacuum effect created in the barrel of a firearm when it is discharged. After the weapon is fired, air races into the barrel once the bullet has left the muzzle. This vacuum can pull in trace amounts of materials from the environment. Police can use blood and tissue which have entered a gun barrel...
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http://en.wikipedia.org/wiki/Blowback_(forensics)
[intelligence] Blowback is unintended consequences of a covert operation that are suffered by the aggressor. To the civilians suffering the blowback of covert operations, the effect typically manifests itself as `random” acts of political violence without a discernible, direct cause; because the public—in whose name the intelligence age...
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http://en.wikipedia.org/wiki/Blowback_(intelligence)

A system of operation for self-loading firearms that obtains power from the motion of the cartridge case as it is pushed to the rear by expanding gases created by the ignition of the powder charge.[3]
Found on
http://en.wikipedia.org/wiki/Glossary_of_firearms_terms

(from the article `automatic pistol`) ...to fire as long as the trigger is depressed. Unlike automatic rifles and shotguns, automatic pistols are virtually never operated by combustion ... ...the burning propellant in a cartridge to feed, load, lock, and fire each round and to extract and eject the empty cartridge case. This automatic ....
Found on
http://www.britannica.com/eb/a-z/b/80

Blowback is a method of operation employed in small arms. The energy required to carry out the cycle of operations being supplied to the bolt by the backward movement of the cartridge case caused by gas pressure when the round is fired, hence the bolt is blown back by the force of firing the round.
Found on
http://www.probertencyclopaedia.com/browse/FB.HTM

[
n] - the backward escape of unburned gunpowder after a shot
Found on
http://www.webdictionary.co.uk/definition.php?query=blowback
noun misinformation resulting from the recirculation into the source country of disinformation previously planted abroad by that country`s intelligence service
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.