Nounviscera; bowels

Nounliver

Nounkidney

Nouninternal organs; viscera

Nounthe five viscera (liver, lungs, heart, kidney and spleen)

Nounlungs

Nounspleen

Nounpancreas

Nounconcealing one's thoughts; reserve; reservation

Nouninternal organs such as heart, liver, kidneys used as food

Nouninternal organs such as intestines used as food

Nounboldness; guts; courage; gall; sangfroid

Expressions (phrases, clauses, etc.), Nounheart

Nounhepatopancreas

Nounartificial heart

Expressions (phrases, clauses, etc.), Nountimidity; cowardice; courage of a flea

Nounathlete's heart