A variant spelling of aegis; protection, sponsorship, or patronage; or the breastplate or cloak of a deity in classical mythology.
From Latin 'aegis' (protection), from Greek 'aigis' (goatskin, cloak of Zeus or Athena). The variant spelling 'egis' omits the initial 'a', common in older English texts.
The aegis (or egis) of Athena was a magical goatskin cloak that made the goddess invincible—modern uses of 'under the aegis of' trace back to this mythological image of divine protective clothing.
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