| Archangel 1. (n.) A chief angel; one high in the celestial hierarchy. 2. (n.) A term applied to several different species of plants (Angelica archangelica, Lamium album, etc.). Thesaurus Entries angel, angel of light, angel of love, angelology, angels, archangels, beatified soul, canonized mortal, celestial, cherub, cherubim, dominations, dominions, heavenly being, martyr, messenger of God, patron saint, powers, principalities, principality, recording angel, saint, saved soul, seraph, seraphim, soul in glory, thrones, virtues |