|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
diploe dip·lo·e (dĭp'lō-ē')
The central layer of spongy, porous, bony tissue between the hard outer and inner bone layers of the cranium.