Definition of "third eye" []

• A sensory structure capable of light reception, located on the dorsal side of the diencephalon in various reptiles. Also called pineal eye. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "It was a wicked-looking blue chicken with a third eye bursting through its forehead—a chicken with twelve claws, all of which clutched instruments of death: daggers, swords, deep-fry baskets, meat tenderizers, and a snickersnee."
• "It is believed that the third eye insures the “debil-debil” against all possible surprises, thus preserving the mystery of identity."