Viscus

·noun One of the organs, as the brain, heart, or stomach, in the great cavities of the body of an animal;

— especially used in the plural, and applied to the organs contained in the abdomen.

viscus
viscus, ĕris, and more freq. in the plur.: viscĕra, um, n. [prop. the soft parts; cf.: viscum, visci...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
viscus
vīscus eris, and usu. viscera um, n cf. viscum, the inner parts of the body, internal organs, inw...

An Elementary Latin Dictionary