PS

*ṯ̣Vrr- - flint (Fronzaroli 1968: 271, 287, 298; Kogan 2011: 190)

Akkadian
ṣurru - flint, obsidian (CAD Ṣ 257, AHw. 1114)
Hebrew
ṣōr - flint (HALOT 1052)
Syriac
ṭarrānā - flint (LSyr. 286, SL 554)
Arabic
ḏ̣irr- - flint (Lane 1909)