Proto-MSA

*ṭVˁr- - clay (Kogan 2015:573)

Is related to Akk. ṭēru ‘mud, silt’, but no further cognates elsewhere in Semitic could be detected. (Kogan 2015:573)

Mehri
ṭōr - potter’s clay (ML 405)
Jibbali
ṭˁɔr - potter’s clay (JL 273)
Soqotri
ṭóˀḥor - clay (LS 202; CSOL I 681; CSOL II 615)