noun, plural lu·nu·lae [loo-nyuh-lee] /ˈlu nyəˌli/.
Origin of lunula
Examples from the Web for lunule
Historical Examples of lunule
Lunule: An impressed area just below the beaks of bivalve shells.
The lunule is large and ribbed; the teeth are small; the color is pure white, with a light straw-tinted epidermis.
There is no lunule, but a large external ligament is very prominent just back of the beaks.
Legs deep rufous; antenn black; the club beneath and lunule round the eye straw-coloured.Zoological Illustrations, Volume I
The lateral teeth are the stronger, and the lunule is upon the right valve only.