\Ex*u"vi*[ae]\, n. pl. [L., fr. exuere to draw out or
off, to pull off.]
1. (Zo["o]l) Cast skins, shells, or coverings of animals; any
   parts of animals which are shed or cast off, as the skins
   of snakes, the shells of lobsters, etc.

2. (Geol.) The fossil shells and other remains which animals
   have left in the strata of the earth.