rumen
Concise Oxford English Dictionary © 2008 Oxford University Press:
rumen /ˈruːmɛn/
▶noun (pl. rumens or rumina /-mɪnə/) Zoology the first stomach of a ruminant, which receives food or cud, partly digests it, and passes it to the reticulum.
– origin C18: from L., lit. ‘throat’.
'rumen' also found in these Oxford entries:
