(Greek mythology, Roman mythology) A mythological shield associated with the Greek deities Zeus and Athena (and their Roman counterparts Jupiter and Minerva) shown as a short cloak made of goatskin worn on the shoulders, more as an emblem of power and protection than a military shield. The aegis of Athena or Minerva is usually shown with a border of snakes and with the head of Medusa in the center.

(military) An Aegis class cruiser.

plural of Aegis cruiser

(military) A cruiser equipped with sophisticated defenses against missile and air attack.

plural of Aegis class cruiser

plural of aegis

(Greek mythology) The murderer of Agamemnon and lover of his wife Clytemnestra.