/ Dictionary / Index P pineal body: Meaning and Definition of Find definitions for: pin'eal bod"y Pronunciation: [key] (formerly) the pineal gland. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pineal apparatus pineal eye Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language