1. hammermill - Noun
2. hammermill - Verb
hammermill (plural hammermills)
English Wikipedia has an article on:hammermillWikipedia
A machine for shredding or crushing aggregate material, consisting of a drum containing a vertical or horizontal rotating shaft or drum on which hammers are mounted.
hammermill (third-person singular simple present hammermills, present participle hammermilling, simple past and past participle hammermilled)
(transitive) To shred or crush by means of a hammermill.