- tour|ma|line
- tour|ma|line «TUR muh lihn, -leen», noun.a semiprecious colored mineral found in deposits of coarse granite. Tourmaline is a silicate of boron and aluminum with varying amounts especially of calcium and sodium, and may be black, brown, red, pink, green, blue, or yellow. The transparent varieties are used in jewelry. Also, turmaline.╂[< French tourmaline < Singhalese tòramalli a carnelian]
Useful english dictionary. 2012.