defaecation
noun /ˌdefəˈkeɪʃn/,  /ˌdiːfəˈkeɪʃn/
  /ˌdefəˈkeɪʃn/,  /ˌdiːfəˈkeɪʃn/
(British English) (also defecation British and North American English)
 [uncountable] (formal)- the act of getting rid of solid waste from your body through your bowels