Definition of "turquoise" []

• A blue to blue-green mineral of aluminum and copper, mainly CuAl6(PO4)4(OH)8·4H2O, prized as a gemstone in its polished blue form. (noun)
• A light to brilliant bluish green. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "GSI pointed out that turquoise is the color of the throat, the voice, communication."
• "We also found a second fabulous pair — edgier in turquoise and black — that we instantly dubbed my Berlin glasses."
• "Since aqua/turquoise is one of my favorite color types, I think my vote would be on "before"."