digester

n. 1. One who digests. [ 1913 Webster ]

2. A medicine or an article of food that aids digestion, or strengthens digestive power. [ 1913 Webster ]

Rice is . . . a great restorer of health, and a great digester. Sir W. Temple. [ 1913 Webster ]

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. [ 1913 Webster ]