ocellus

/oʊˈsɛləs/

Other forms: ocelli

Definitions of ocellus

1. noun

   an eye having a single lens
   synonyms: simple eye, stemma

   types:

   ommatidium

   any of the numerous small cone-shaped eyes that make up the compound eyes of some arthropods

   type of:

   eye, oculus, optic

   the organ of sight
2. noun

   an eyelike marking (as on the wings of some butterflies); usually a spot of color inside a ring of another color
   synonyms: eyespot

   type of:

   marking

   a pattern of marks