A state of restlessness and agitation, often accompanied by a distressing sense of oppression or tightness in the stomach.
An unpleasant state of mental uneasiness, nervousness, apprehension and obsession or concern about some uncertain event.
An uneasy or distressing desire (for something).
A pain in the abdomen, often caused by indigestion. (The pain is usually lower than the stomach and related to the intestines.)