Noun

1. A splendid display of something.
   • 1961, J. A. Philip, "Mimesis in the Sophistês of Plato," Transactions and Proceedings of the American Philological Association, vol. 92, p. 459,

     Even though we cannot affirm that the products of mimesis are invested in the panoply of existence.

2. Ceremonial garments, complete with all accessories.
3. A complete set of armour.
4. Something that covers and protects.