The inner part or region; plural. Inward parts, entrails (rendering Latin viscera; in quots. only figurative: see bowel, n.1 3). Obsolete.

figurative. The interior or inner parts of something.

figurative. The interior or inner part or parts of something. Somewhat rare.

The interior of anything; heart, centre. Cf. belly, n. 9.

The heart, liver, lungs, and other viscera of an animal, as used for food.

transferred. The interior; the inner parts: = bowel, n.1 4.

The inward parts or contents of a thing.

In plural. The inner parts or workings of a structure, machine, etc.; the insides of something.

With plural agreement. Entrails. Now in common colloquial use. Also transferred and figurative: the inside (of anything).