bowel movement [bowel movements](discharge of feces) noun [UK: ˈbaʊəl ˈmuːv.mənt] [US: ˈbaʊəl ˈmuːv.mənt]
evacuation [evacuations](act of evacuating; leaving a place in an orderly fashion, especially for safety) noun [UK: ɪ.ˌvæ.kjʊ.ˈeɪʃ.n̩] [US: ɪ.ˌvæ.kjə.ˈweɪʃ.n̩]