gunlock

[guhn-lok] /ˈgʌnˌlɒk/
noun
1.
the mechanism of a firearm by which the charge is exploded.
Origin
1645-55; gun1 + lock1
Examples from the web for gunlock
  • If you have a gun in the home, make sure it has a gunlock on it or is locked in a safe.
British Dictionary definitions for gunlock

gunlock

/ˈɡʌnˌlɒk/
noun
1.
the mechanism in some firearms that causes the charge to be exploded