Reconstruction:Thracian/spīnos

Etymology
Unclear:
 * Left undetermined by Duridanov;
 * Danka & Witczak compare it with 🇨🇬, 🇨🇬, perhaps from ;
 * Formally fits an n-derivative of ; compare 🇨🇬.

Noun

 * 1) type of rock / ore which blazes in contact with water (per Aristotle)