koh-i-noor noun. ['kǝʊɪnʊǝ] Also (earlier) Cohi Noor. E19.
[from Persian kūh mountain + i of + Arab. nūr light.]
1. A famous Indian diamond, part of the British Crown jewels since 1849; transf. any magnificent large diamond. E19.

2. fig. Something that is the most precious or most superb of its kind. L19.

[TahlilGaran] English Dictionary ▲