Noun
1. Any of several tongue-shaped bony structures, especially that which forms the anterior border of the mandibular foramen. (wiktionary.org)
- Lingula of left lung
- Sphenoidal lingula
- Lingula of mandible
- Lingula of cerebellum
2. (Genus) A brachiopod genus of the family Lingulidae, which is among the few brachiopods surviving today but also known from fossils over 500 million years old. (wikipedia.org)
Word origin: Diminutive of Latin lingua, hence, a little tongue.