A Cherub's first definition in the dictionary is , “A winged heavenly creature.” Cherubim is the plural of cherub. In the Word, the words cherub or cherubim are used to indicate a guard - the Lord’s providence guarding against profanation, which is the mixing of truth with evil, or good with falsity.

(Reference: Apocalypse Revealed 48 [4]; Arcana Coelestia 308, 9506 [1-5])