Webster’s Revised Unabridged Dictionary · 1913
Digester
Di·gest′er (·ẽr), 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.