When you expel feces, this is an example of a time when you defecate.
Origin of defecate
- Latin dēfaecāre to clean the dregs from dē- de- faex faec- dregs
From American Heritage Dictionary of the English Language, 5th Edition
- From the participle stem of Latin dēfaecāre (“to purify”), from de- and faex (“dreg, impurity”).