D defs.my
Entry 3 senses Webster, 1913

Digester

/dīj'-ĕsˌ-tẽr/ · Di·gest·er · IPA /dˈaɪdʒˌɛstər/
01 n. One who digests.
  1. 1.
    One who digests.
  2. 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. 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.