Rēgīna deum, or 'Queen of the Gods,' refers to Juno, the Roman goddess who holds a significant role in Vergil's Aeneid. She is often depicted as a powerful figure who embodies both divine authority and emotional complexity, particularly in her opposition to Aeneas and his mission to found Rome. This term captures her dual nature as protector and adversary, revealing the intricate dynamics of divine intervention in the epic.