瘤胃,反芻
Rumen \Ru"men\, n. [L. rumen, - inis, the throat.] 1. (Anat.) The first stomach of ruminants; the paunch; the fardingbag. See Illust. below.
rumen n : the first compartment of the stomach of a ruminant; here food is collected and returned to the mouth as cud for chewing [syn: {first stomach}] [also: {rumina} (pl)]