omasus

Etymology
Misinterpretation of omasum.

Noun

 * 1) The omasum.
 * 2) * 1658: after a fuller mastication, and salivous mixture, what part thereof descendeth again, in a moist and succulent body, it slides down the softer and more permeable Orifice, into the Omasus or third stomack — Sir Thomas Browne, The Garden of Cyrus (Folio Society 2007, p. 192)