1) Defecation 2) Haematochezia 3) Laxation 4) Medical sign 5) Shitting 1) Haematochezia 
Haematochezia (or hematochezia; also haemochezia or hemochezia) (from Greek αἷμα (`blood`) and χέζειν (`to defaecate`)) is the passage of fresh blood through the anus, usually in or with stools (contrast with melena). Haematochezia is commonly associated with lower gastrointestinal bleeding, but may also occur from a brisk upper gas...
(he″mә-to-) (hem″ә-to-ke´zhә) defecation in which feces are bloody.
Type: Term Pronunciation: hē′mă-tō-kē′zē-ă, hem′ă- Definitions: 1. Passage of bloody stools, in contradistinction to melena, or tarry stools.
Hematochezia: Bright red blood in the stool, usually from the lower gastrointestinal tract -- the colon or rectum -- or from hemorrhoids. The term 'hematochezia' is rarely used. 'Bright red blood in the stool' is more widely used (and understood).
maroon stools, usually from a lower GI bleed
[n] - passage of stools containing blood (as from diverticulosis or colon cancer or peptic ulcer)