Areal reconstruction

*šar-, *sar- - vertebral column, backbone (SED I No. 253)

Arabic
sarāt- - back; middle (BK 1 1085, Lane 1353)
< *saraw/y-at-
Arabic
sarīr- - part where the head rests upon the neck (BK 1 1076, Lane 1339)
Amharic
säräsär - vertebra, spinal cord, sinew (AED 487)
Amharic
sərasəra - vertebrae (AED 487)
Selti
särsär - rib of the animal (EDG 1017)
Selti
särsär - instrument made of the ribs of a cow and used for leveling the floor (EDG 562)
Chaha
särsär - instrument made of the ribs of a cow and used for leveling the floor (EDG 562)
Endegen
särsär - instrument made of the ribs of a cow and used for leveling the floor (EDG 562)
Endegen
sässär - rib of the animal (EDG 233)
Ennemor
särsär - instrument made of the ribs of a cow and used for leveling the floor (EDG 562)
Gyeto
särsär - instrument made of the ribs of a cow and used for leveling the floor (EDG 562)
Harsusi
sār, ser - behind, after (HL 112)
Likely related with a meaning shift.