poop machine

Etymology
From the view that the subject (a baby or animal) does nothing but digest food and produce waste.

Noun

 * 1)  An infant.
 * 2)  An animal whose defecation inconveniences humans.
 * 1)  An animal whose defecation inconveniences humans.

Synonyms

 * see also Thesaurus:baby.
 * see also Thesaurus:baby.
 * see also Thesaurus:baby.