Added 9 October 2026 aaron noun Categories: PeopleUncommon Words noun ! Definition from WordNet 3.1, Princeton University. More about aaron at Wordnik → Where our words come from → United States professional baseball player who hit more home runs than Babe Ruth (born in 1934). (Old Testament) elder brother of Moses and first high priest of the Israelites; created the golden calf. Related Words: harounharoonalanurbanarronaronaharonharunallanallencopelandarun Back to today's word