1. The membrane in the ear that vibrates to sound.
2. The tympanic membrane, or the obliquely placed, thin membranous partition between the external acoustic meatus and the tympanic cavity.

The myringa constitutes the boundary between the external and middle ear; it is a trilaminar membrane covered with skin on its external surface, mucosa in its internal surface, is covered on both surfaces with epithelium, and, in the tense part, has an intermediate layer of outer radial and inner circular collagen fibers.