2 definitions found From WordNet (r) 2.0 [wn]: ocellus noun 1: an eye having a single lens [syn: {simple eye}, {stemma}] 2: an eyelike marking (as on the wings of some butterflies); usually a spot of color inside a ring of another color [syn: {eyespot}] [also: {ocelli} (pl)] From The Collaborative International Dictionary of English v.0.44 [gcide]: Ocellus \O*cel"lus\, noun; pl. {Ocelli}. [L., dim. of oculus an eye.] (Zo["o]l.) (a) A little eye; a minute simple eye found in many invertebrates. (b) An eyelike spot of color, as those on the tail of the peacock.

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