PES

*skm - to carry on shoulders (CDG 496; Kogan 2011: 216)

PWS
*ṯVkm- - the lowest part of the neck (SED I No. 281; Kogan 2011: 216)

Geez
sakama - to carry on shoulders (CDG 496)
Tigre
šäkəm - fardeau (WTS 222)
likely a deverbal noun
Tigrinya
täsäkkämä - portare, mettersi sulle spalle (to carry, put on shoulders) (TED 747, Bassano 1918: 365)
Amharic
täšäkkämä - to carry, to bear (AED 650)
Argobba
(əš)šekkäma - to carry on the back (Leslau 1997: 221)
In Faber 1984: 210.