As a Noun: 1. The soft covering on chairs and sofas that makes them more comfortable to sit on. English = upholstery. 2. A person who makes, finishes, or repairs the soft coverings of chairs, couches, sofas, and so on. English = upholsterer. As a Verb or Adjective: 1. To make, finish or repair the soft covering of a chair, couch, or sofa. English = upholster.