defecate, defaecate [ˈdɛfɪˌkeɪt]
vb1. (Life Sciences & Allied Applications / Physiology) (intr) to discharge waste from the body through the anus 2. (Chemistry) (tr) to clarify or remove impurities from (a solution, esp of sugar) [from Latin dēfaecāre to cleanse from dregs, from de- + faexsediment, dregs]