Ocellus

n.

1.

(Zool.) A little eye; a minute simple eye found in many invertebrates.

Noun	1.	ocellus - an eye having a single lens Synonyms: simple eye, stemma
	2.	ocellus - an eyelike marking (as on the wings of some butterflies); usually a spot of color inside a ring of another color Synonyms: eyespot

eye, oculus, ommatidium, optic, simple eye, stemma