Pineal

[Sarah]

Of or pertaining to a pine cone; resembling a pine cone. Pinealgland (Anat.), a glandlike body in the roof of the third ventricle ofthe vertebrate brain; -- called also pineal body, epiphysis,conarium. In some animals it is connected with a rudimentary eye, theso-called pineal eye, and in other animals it is supposed to be theremnant of a dorsal median eye.