*ṯ̣ahr- - back (SED I No. 284; Kogan 2011: 217)

Proto-MSA

*ṯ̣a(h)r - on, over (Kogan 2015:575)

The original anatomical meaning is completely lost throughout this group. Semantically similar prepositional use of reflexes of *ṯ̣a(h)r- is admittedly attested in a few other Semitic languages (SED I No. 284). (Kogan 2015:575)

Akkadian

ṣēru - back (CAD Ṣ 138, AHw. 1093)

Ebla

ṣa-lum - back (EV 0357; Krebernik 1983: 47)

= Sum. MURGU

Ugaritic

ṯ̣r - back (WUS 272)

Amarna Canaanite

ṣú-uḫ-ru-ma - on the back (DNWSI 964)

Hebrew

ṣōhar - a designation of Noah’s Ark (HALOT 1008)

in Gn 6: 16

Arabic

ḏ̣ahr- - back (BK 2 145, Lane 1927)

Tigrinya

č̣əra - coda (Bass. 931)

Amharic

č̣əra - hair at the end of an animal's tail (AED 2211)

Argobba

č̣əra - hair of tail, tail, fly-whisk (Leslau 1997: 197)

Gafat

č̣əra - queue (Leslau 1956: 194)

Muher

č̣ərəyä - hump of an animal (EDG 190)