n. Mineral. extremely hard crystallized alumina, used esp. as an abrasive, and varieties of which, e.g. ruby and sapphire, are used for gemstones. [Tamil kurundam f. Skr. kuruvinda ruby]
CORUNDUM
Meaning of CORUNDUM in English
English main colloquial, spoken dictionary. Английский основной разговорный словарь. 2012