/pin"ee euhl, puy"nee-, puy nee"-/ , adj.
1. resembling a pine cone in shape.
2. of or pertaining to the pineal body.
[ 1675-85; pinealis, equiv. to L pine ( a ) pine cone, n. use of fem. of pineus of a pine tree ( pin ( us ) PINE 1 + -eus -EOUS) + -alis -AL 1 ]