egis

noun

less common spelling of

1 : a shield or breastplate emblematic of majesty that was associated with Zeus and Athena
2a : protection under the aegis of the Constitution
b : controlling or conditioning (see condition entry 2 sense 5a) influence passed new laws under the aegis of national security
3a : auspices, sponsorship under the aegis of the museum
b : control or guidance especially by an individual, group, or system under the aegis of the government