ocellus
1. [ noun ] (zoology) an eye having a single lens
Synonyms: stemma simple_eye
Related terms: eye ommatidium
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
Related terms: marking
Similar spelling:   oculus
  occlusive
  occlusion
  oculist