ocellus

Definitions of ocellus
  1. noun
    an eye having a single lens
    synonyms: simple eye, stemma
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    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
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    type of:
    marking
    a pattern of marks
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