emery board

English

Noun

emery board (plural emery boards)

an emery board

1. An abrasive strip made by gluing grains of emery onto a rigid material. Often used as a nail file.
   • 2009, Chris Epting, The Early Polo Grounds, page 1948:

     He was known for throwing the “emery ball,” a baseball that had been scuffed with a piece of emery board hidden in the heel of his glove.