Digester

n.	1.	One who digests.
	2.	A medicine or an article of food that aids digestion, or strengthens digestive power. Rice is . . . a great restorer of health, and a great digester. - Sir W. Temple.
	3.	A strong closed vessel, in which bones or other substances may be subjected, usually in water or other liquid, to a temperature above that of boiling, in order to soften them.

Noun

1.

digester - autoclave consisting of a vessel in which plant or animal materials are digested

autoclave, digest, steriliser, sterilizer