Definitions

1. noun

A rock or mineral containing tourmaline; especially a type of rock that is rich in tourmaline.

“The geologist studied a sample of tourmalite to learn more about its mineral composition.”

2. noun

Tourmaline or a type of rock that contains tourmaline, used as a gemstone or in jewelry.

“She found a beautiful piece of tourmalite at the antique store and bought it as a gift.”