stomach

1 stomach /ˈstʌmək/ noun
plural stomachs
1 stomach
/ˈstʌmək/
noun
plural stomachs
Britannica Dictionary definition of STOMACH
1 
[count]
a  : the organ in your body where food goes and begins to be digested after you swallow it
— often used before another noun — see picture at human
b  : the part of your body that contains the stomach
2 
[noncount] : the desire, courage, etc., that is needed to do or accept something difficult or unpleasant — usually used in negative statements

a strong/weak stomach

◊ If you have a strong stomach, you are not bothered by things that many people find disgusting, shocking, or offensive.
◊ If you have a weak stomach, you are easily bothered by disgusting, shocking, or offensive things.

on a full stomach

: after eating a lot of food

on an empty stomach

: with nothing in your stomach

sick to your stomach

— see 1sick

turn your stomach

◊ Something that turns your stomach or makes your stomach turn makes you feel ill or uncomfortable usually because it is offensive or disgusting.

your eyes are bigger than your stomach

— see 1eye
2 stomach /ˈstʌmək/ verb
stomachs; stomached; stomaching
2 stomach
/ˈstʌmək/
verb
stomachs; stomached; stomaching
Britannica Dictionary definition of STOMACH
[+ object]
1 
: to accept or experience (something unpleasant) without becoming sick, upset, etc.
2 
: to eat (something) without getting a sick or unpleasant feeling in your stomach