1) Ancient Norse chieftain 2) Danish boy name 3) Early norse chieftain 4) Norwegian boy name 5) Norwegian boy name 6) Old Norse chieftain 7) Scandinavian noble 
• (n.) A chief; an earl; in English history, one of the leaders in the Danish and Norse invasions.
Jarl noun [ Icelandic , nobleman, chief. See Earl .] A chief; an earl; in English history, one of the leaders in the Danish and Norse invasions. Longfellow. 
Jarl is a word of Scandinavian origin, the same as earl, and applied in the early history of the northern European kingdoms to the lieutenants or governors appointed by the kings over each province.