Pineal gland Meaning, Definition & Usage
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noun a small endocrine gland in the brain; situated beneath the back part of the corpus callosum; secretes melatonin
epiphysis cerebri; pineal body; epiphysis.
WordNet
Definitions
(Anat.) , a glandlike body in the roof of the third ventricle of the vertebrate brain; called alsopineal 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.