PWS

*lbn - to be white (Bulakh 2004: 270–273; Bulakh 2006: 185–195; Kogan 2011: 198)

Level? See also *laban- - white Given the fact that transparent cognates to this root are missing in both Akkadian and Ethiopian, there is no serious obstacle against tracing it back to the would-be common ancestor of CS and MSA. But this is a truly unique example of this kind (Kogan 2015: 115)