excrete

Concise Oxford English Dictionary © 2008 Oxford University Press:
excrete /ɪkˈskriːt, ɛk-/

▶verb (of a living organism) separate and expel as waste (a substance, especially a product of metabolism).

– derivatives
excreter noun,
excretion noun,
excretive adjective,
excretory adjective.

– origin C17: from L. excret-, excernere ‘sift out’.