Jalut
Jalut (Jālūt) is mentioned in Surah al-Baqarah (2:251) in the account where Prophet Dāwūd defeats him; the story is also alluded to in related narratives.
Jalut is the Arabic proper name corresponding to the Biblical Goliath; while associated with a giant figure in the narrative, the name itself functions as a proper noun rather than a descriptive Arabic word meaning 'giant'.
It is quite rare. Because Jalut is principally remembered as an adversary of Prophet Dāwūd, many Muslim families avoid using it as a given name; it is more common in academic references.
Common transliterations include Jālūt, Jalut, and Jaloot; pronunciation conventions vary by language and region.
Yes. In the same narrative context, Talut (the king/leader) and Dāwūd (the prophet who defeats Jalut) are closely related figures and frequently discussed together.