D defs.my
Entry 1 sense Webster, 1913

Grater

/grāt'ər/ · Grat·er · IPA /ˈɡɹeɪtɚ/
01 a. One who, or that which, grates; especially, an instrument or utensil with a rough, indented surface, for rubbing off small particles of any…
  1. 1.
    One who, or that which, grates; especially, an instrument or utensil with a rough, indented surface, for rubbing off small particles of any substance; as a grater for nutmegs.