bite in

verb2

1. •
   (old-fashioned) 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
2. •
   (old-fashioned) To corrode metallic plates by means of an acid, as part of an etching process.