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sard

American  
[sahrd] / sɑrd /

noun

  1. a reddish-brown chalcedony, used as a gem.

sard British  
/ ˈsɑːdɪəs, sɑːd /

noun

  1. Also called: sardine.  an orange, red, or brown variety of chalcedony, used as a gemstone. Formula: SiO 2

"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

Etymology

Origin of sard

1350–1400; Middle English < Latin sarda < Greek sárdios sardius

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.