In reply to DaveAtkinson:
> (In reply to flaneur)
> Strictly Oxford English for me sir, ....
While we're being pedantic, from the Oxford English Dictionary:
"crozzle, n. dial.
[Relation to prec. obscure.]
A cinder.
1819 Hunter Hallamsh., Crozzil, half-burnt coals.
1883 Almondb. & Huddersf. Gloss., Crozzle, a hard cinder found in furnaces.
1887 S. O. Addy in N. & Q. 7th Ser. III. 422/2 The [bronze] spear-head
bears marks of having been subjected to a hot fire, the point especially
having been burnt to a _crozzil'."
Looks like a dialect word from the steel industry. Which may explain why peakies would use it.