Answer: ocellus

AnswerCrossword Clue
OCELLUSPeacock's eyespot
OCELLUSEyespot
OCELLUSEyelike spot, as on peacock feathers
ocellusa minute simple eye or eyespot of an invertebrate
ocellusa minute simple eye
ocelluseyelike colored spot (as on a peacock feather or the wings of some butterflies)