PWS

*kb - to be curved, bent; to make a circular movement; to encircle (Kogan 2015: 443)

possibly also: JPA kwb - pitcher; pB Heb kabkāb/kapkāp - an arched round vessel; Akk kabābu - shield

Arabic
kbb - to overturn, turn upside-down (Lane 2582)
Arabic
kbkb - to turn over (Lane 2582)
Geez
kəbub - round (CDG 273)
Tigre
kəbub - round (WTS 410)
Tigrinya
käbbib - round (TED 1631)
Amharic
kəbb - round (AED 1420)
Soddo
kəbb - round (EDG 333)
Mehri
kbūb - to stoop (ML 201)
Jibbali
ekbéb - to stoop (JL 124)