What's the difference between firelock and flintlock?

Firelock

Definition:

(n.) An old form of gunlock, as the flintlock, which ignites the priming by a spark; perhaps originally, a matchlock. Hence, a gun having such a lock.

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Definition:

(n.) A lock for a gun or pistol, having a flint fixed in the hammer, which on striking the steel ignites the priming.
(n.) A hand firearm fitted with a flintlock; esp., the old-fashioned musket of European and other armies.

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