プログレッシブ和英中辞典(第4版)の解説
つうじ【通じ】
〔便通〕the action [movement] of the bowels, a bowel movement ((略 B.M.))；〔医学で〕an evacuation
通じがきちんとある
I have regular bowel movements.
３日間通じがない
I have been constipated for three days.／I have had no (bowel) movements for three days.
通じをつける
loosen [move] the bowels
通じをよくする
improve one's regularity