From Longman Dictionary of Contemporary Englishgratergrat‧er /ˈɡreɪtə $ -ər/ noun [countable] 
DFUa tool used for grating food a cheese grater
DFUa tool used for grating food a cheese graterExamples from the Corpus
grater• She sings like some one has taken a cheese grater to her throat.• We also liked the citrus juicer, below, and the cheese grater, complete with a collecting dish.• The ramp begins to be known as the cheese grater.• Cole & Mason nutmeg grater from major department stores and good kitchen shops, £9.25.• Josie's hand slipped on the grater and a bright bead of blood swelled out of her forefinger.• Great idea: before grating orange or lemon peel, run the grater under the cold tap to prevent sticking.• But Karplus claimed that nothing gives theoreticians grater satisfaction than to find close harmony between their results and the laboratory results. 