tourmaline: Meaning and Definition of

tour•ma•line

Pronunciation: (toor'mu-lin, -lēn"), [key]
— n.
  1. any of a group of silicate minerals of complex composition, containing boron, aluminum, etc., usually black but having various colored, transparent varieties used as gems.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
tour jeté Tournai
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