What is the meaning of Jeb?

ISO 639-3 language code for Jebero.

or, also known as, to wit

or (uniting two clauses introduced by the conjunction vai, either questions or subordinate clauses)

imperative singular of jebaś

to reach, to get to, to arrive

wham!; bang!; onomatopoeia for hitting, punching or explosions

second-person singular imperative of jebać

pocket

Source: wiktionary.org