Means "uncle", from Hebrew
אָח ('ach) "brother" and
אֲב ('av) "father". This was the name of a king of Israel, the husband of
Jezebel, as told in the Old Testament. He was admonished by
Elijah for his sinful behaviour. This name was later used by Herman Melville in his novel 'Moby-Dick' (1851), where it belongs to a sea captain obsessively hunting for a white whale.