Where does “لب” come from?

لب (Egyptian Arabic) comes from Arabic لب, from Proto-Semitic libb-, from Proto-Afroasiatic lib- — heart.

لب (Egyptian Arabic): kernels

Definitions

Step	Language	Word	Meaning
1	Arabic	لب	pulp, backlog, marrow, core, heart; intellect,...
2	Proto-Semitic	libb-	heart
3	Proto-Afroasiatic	lib-	heart

لب — Etymology, Origin & Word History | Etymology Explorer