hawk's-eye

[ hawks-ahy ]
/ ˈhɔksˌaɪ /

noun

a dark-blue chatoyant quartz formed by the silicification of crocidolite, used for ornamental purposes.Compare tiger's-eye (def. 1).

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Origin of hawk's-eye

First recorded in 1675–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for hawk's-eye

hawk's-eye

noun

a dark blue variety of the mineral crocidolite: a semiprecious gemstone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012