Your stomach is the organ inside your body where food is digested before it moves into the intestines.

You can refer to the front part of your body below your waist as your stomach .

If the front part of your body below your waist feels uncomfortable because you are feeling worried or frightened, you can refer to it as your stomach .

If you say that someone has a strong stomach, you mean that they are not disgusted by things that disgust most other people.

If you cannot stomach something, you cannot accept it because you dislike it or disapprove of it.

If you do something on an empty stomach, you do it without having eaten.

If you have no stomach for something, you do not have the courage to do it.

If you say that you feel sick to your stomach about something, you mean that you feel very angry or upset about it.

If you say that something turns your stomach or makes your stomach turn, you mean that it is so unpleasant or offensive that it makes you feel sick.