biting in

Verb

bite in (third-person singular simple present bites in, present participle biting in, simple past bit in, past participle bitten in)

1. (dated) To corrode metallic plates by means of an acid, as part of an etching process.
2. (dated, transitive) To repress (an emotion); bite back.
   • He says, he bit in his rage as best he could, took his hat, pretended business, and walked the three out, instead of kicking them out.1888, A. S. Arnold, The Story of Thomas Carlyle, page 235