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late 14c., "grill for cooking;" early 15c., "iron bars or cagework across a door or windows," from Anglo-Latin (mid-14c.), from Old French grate or directly from Medieval Latin grata "lattice," from Latin cratis "wickerwork, hurdle" (see hurdle). As a verb meaning "to fit with a grate," from mid-15c. Related: Grated; grating.
"to scrape, rub," late 14c. (implied in grated), from Old French grater "to scrape" (Modern French gratter), from Frankish *kratton, from Proto-Germanic *krattojan (cf. Old High German krazzon "to scratch, scrape," German kratzen "to scratch," Swedish kratta, Danish kratte "to rake"), probably of imitative origin. Senses of "sound harshly," and "annoy" are mid-16c. Italian grattare also is from Germanic. Related: Grated; grating.
a network of brass for the bottom of the great altar of sacrifice (Ex. 27:4; 35:16; 38:4, 5, 30).