/ Thesaurus / P Synonyms of pineal eye Find synonyms for: Noun1. third eye, pineal eye, sense organ, sensory receptor, receptorusage: a sensory structure capable of light reception located on the dorsal side of the diencephalon in various reptilesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: respite Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language