The Collaborative International Dictionary
Pineal \Pi"ne*al\, a. [L. pinea the cone of a pine, from pineus of the pine, from pinus a pine: cf. F. pin['e]ale.] Of or pertaining to a pine cone; resembling a pine cone.
Pineal gland (Anat.), a glandlike body in the roof of the third ventricle of the vertebrate brain; -- called also pineal body, epiphysis, conarium. In some animals it is connected with a rudimentary eye, the so-called pineal eye, and in other animals it is supposed to be the remnant of a dorsal median eye.
WordNet
n. a small endocrine gland in the brain; situated beneath the back part of the corpus callosum; secretes melatonin [syn: pineal gland, epiphysis cerebri, epiphysis]
Usage examples of "pineal body".
As living information, the plasmate travels up the optic nerve of a human to the pineal body.
That meant that his neural firing was perfect, and his pineal body registered the presence of light carried up its branch of the optic conduit.
I can even tell you how it enters - along the optic conduit to the pineal body.
It seemed to be just beneath the hind-brain, in the pons or the pineal body.