frizzle - the steel upright part of the pan cover in a flintlock gun, against which the flint strikes to produce sparks [nouning the verb?] - Webster's New 20th C. Dict.

1892 Northumbld. Gloss. 305 Frizzle, in flint and steel guns the piece of iron acted on by the flint to produce the explosion. cf. flint and fleerish, flint and furison, flint and steel - OED2