Lingula

Noun

1. A Roman unit of liquid measure reckoned as the volume of 5/12 Roman ounce of wine, equivalent to about 11 mL.
2. Any of several tongue-shaped bony structures, especially that which forms the anterior border of the mandibular foramen.
3. Any small, fleshy tongue-shaped structure, such as in the anatomy of the brain or the human left lung, or in the whitefly vasiform orifice.