Digester

Part of speech: noun (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.