The Collaborative International Dictionary
Ophthalmite
Ophthalmite \Oph*thal"mite\, n. [Gr. 'ofqalmo`s the eye.] (Zo["o]l.) An eyestalk; the organ which bears the compound eyes of decapod Crustacea.
Wiktionary
ophthalmite
n. 1 (context zoology English) An eyestalk. 2 (context mineralogy English) (rfdef: English)