ETYM Old Eng. bouel, bouele, Old Fren. boel, boele, French boyau, from Latin botellus a small sausage, in Late Lat. also intestine, dim. of Latin botulus sausage.
1. One of the intestines of an animal; an entrail, especially of man; a gut; -- generally used in the plural.
2. Hence, figuratively: The interior part of anything.

ETYM French entrailles, Late Lat. intralia, intranea, from interaneum, pl. interanea, intestine, interaneus inward, interior, from inter between, among, within. Related to Internal.
1. The internal parts of animal bodies; the bowels; the guts; viscera; intestines.
2. The internal parts.

Internal organs; intestines.
Internal organs collectively (especially those in the abdominal cavity); SYN. entrails, innards.
General term for the organs contained in the chest and abdominal cavities.