|any of a group of hard glassy red, yellow, or green minerals consisting of the silicates of calcium, iron, manganese, chromium, magnesium, and aluminium in cubic crystalline form: used as a gemstone and abrasive. Formula: A3B2(SiO4)3 where A is a divalent metal and B is a trivalent metal|
|[C13: from Old French grenat, from grenat (adj) red, from pome grenate|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|a chattering or flighty, light-headed person.|
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