metope

noun

1. The architectural element between two triglyphs in a Doric frieze.

   “There's a second plate of that metope that shows the full figures of both Perseus and Medusa and includes the winged horse Pegasus that was born of Medusa's blood.”

   “Architects working on the recent restoration programme have found clear evidence that in its first design the building featured just a row of metope panels over the east and west entrances, where the frieze now runs […].”