Definitions of emery:

• noun:   a hard gary-black mineral consisting of corundum and either hematite or magnetite; used as an abrasive (especially as a coating on paper)
• name:  A male given name (rare: 1 in 10000 males; popularity rank in the U.S.: #686)
• name:  A surname (common: 1 in 10000 families; popularity rank in the U.S.: #1202)