This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. To discharge or excrete from the body.

v. To excrete from the body.

v. To cast or throw out; to void, as excrement; to excrete, as the indigestible matter of the food; in an extended sense, to excrete by the lungs, skin, or kidneys.

To discharge or void, as excrement: opposed to ingest.

To defecate; pass dejecta of any kind.

v. eliminate from the body

"The mouth is typically the only opening to the digestive tract, they use the same opening to both ingest food and egest waste."

egested    egesting    egests   

expel    exhaust    eject    discharge    release   

egestive    egesta    egestion   

pass water    honk    sudate    upchuck    take a leak    empty    ooze out    barf    purge    throw up