What does the Yiddish name Leib mean?

The Yiddish name "Leib" is a diminutive form of the Hebrew name "Levi", which means "attached" or "connected".

It's also sometimes interpreted as meaning "heart" or "soul".

The name Leib is a common Jewish name, and it's often used as a nickname for people whose full name is "Levi" or "Leibish".