the pit of your stomach

the pit of your (or the) stomach

an ill-defined region of the lower abdomen seen as the seat of strong feelings, especially anxiety.
See also: of, pit, stomach

the pit of your/the ˈstomach

the bottom of the stomach where people say they feel strong feelings, especially fear: He had a sudden sinking feeling in the pit of his stomach.
See also: of, pit, stomach