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plural bowel movements
Definition of bowel movement
: an act of passing usually solid waste through the rectum and anus
He had a two-day history of right lower abdominal pain … without bowel movements.— William W. Scott, Jr. et al. also : fecal matter expelled at one passage : stool sense 3a Cats get infected from contact with other cats' bowel movements or by predation. — Donald Caslow
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Time Traveler for bowel movement
The first known use of bowel movement was in 1870
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