# tourmaline

> English word · Noun · IPA /ˈtʊɚ.mə.lɪn/ · frequency rank #50,848

## Definitions
1. A complex black or dark-coloured borosilicate mineral, compounded with various chemical elements and considered a semi-precious stone.
2. A transparent gemstone cut from it.

## Etymology
From French tourmaline, ultimately from Sinhalese තෝරමල්ලී (tōramallī, “carnelian”)

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/tourmaline