nickelling

English

Verb

nickelling

1. present participle and gerund of nickel

Noun

nickelling (uncountable)

1. (firearms) The metallic fouling of a gun's bore with fragments of bullet casing.
   • 1962, Edmund George Barton Reynolds, The Lee-Enfield Rifle, page 158:

     Further trials were carried out to establish their accuracy life and whether they developed any tendency to nickelling under Service conditions.