The name monotreme means one hole referring to the single orifice they use for reproduction, excretion, and egg-laying.

Gregory's Girl makes me laugh every few seconds, and the only mention of a bodily excretion I can remember is Andy's "chat up line" in the school cafeteria: "Did you know that when you sneeze, it comes out of your nose at a 100 miles an hour?"

The agents traditionally used to speed up excretion of inorganic metals from poisoned patients turned out to make symptoms of methyl mercury poisoning worse rather than milder.

Excretion in sentence

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