call of nature
noun Informal.
a need to urinate or defecate.
Origin of call of nature
First recorded in 1850–55
Words nearby call of nature
call market,
call money,
call names,
call number,
call of duty,
call of nature,
call of the wild, the,
call off,
call on,
call on the carpet,
call one's own
Idioms and Phrases with call of nature
call of nature
Need to urinate or defecate, as in He left to answer the call of nature. This euphemism may be dying out. [Mid-1800s]