As a Noun: 1. The action of using your teeth to break food up in your mouth, so that it become easier to swallow. English = chewing. 2. The action of crushing something between two hard surfaces or in a machine until it breaks into lots or small pieces or a fine powder. English = grinding. 3. A machine or device which crushes something into small pieces. English = grinder. As a Verb or Adjective: 1. To use your teeth to break food up in your mouth, so that it become easier to swallow. English = chew. 2. To crush something between two hard surfaces or in a machine until it breaks into lots or small pieces or a fine powder. English = grind.