Definition from Wiktionary, the free dictionary
elytron (plural elytra)
- A sheath or outer covering, especially around the spinal cord or over the hindwings of certain insects.
1997, Thomas Pynchon, Mason & Dixon:
- In a corner, the Darkling Beetle rustles in its Cage, its Elytra the same unforgiving white as the great sand-waste call’d ‘Kalahari’ lying north of here […]