oculus — English Dictionary

Noun

1. A window or other opening that has an oval or circular shape (as of an eye). The central boss of a volute.

2. A window or other opening that has an oval or circular shape (as of an eye). An opening at the apex of a dome.

   Examples

   One can glimpse the sky through the oculus of the Pantheon in Rome.

Noun

1. the organ of sight

   Synonyms

   eyeoptic

   Broader terms

   sense organsensory receptorreceptor