柯林斯詞典bowel movement 1. N the discharge of faeces; defecation 排泄 返回 bowel movement劍橋詞典(used especially by doctors and nurses ) the act of emptying the contents of the bowels , or the material that is emptied （尤爲(wèi)毉護(hù)人員用語）排便 返回 bowel movement