Hebrew Meaning: The name Joelle is a Hebrew baby name. In Hebrew the meaning of the name Joelle is: Jehovah is God.American Meaning: The name Joelle is an American baby name.In American the meaning of the name Joelle is: Jehovah is God. French Meaning: The name Joelle is a French baby name. In French the meaning of the name Joelle is: Jehovah is God.ebrew Meaning: The name Joelle is a Hebrew baby name. In Hebrew the meaning of the name Joelle is: Jehovah is God. American Meaning: The name Joelle is an American baby name. In American the meaning of the name Joelle is: Jehovah is God.