digestive

adj

1. Of, relating to, or functioning in digestion.
2. That causes or promotes digestion.

   “While the doctor and the natives were taking a digestive nap after dinner, I strolled forth to have a peep at the country which could produce so generous a meal.”

noun

1. A substance that aids digestion.
2. (Canada, Ireland, UK)A digestive biscuit.

   “I bought a packet of chocolate digestives.”

   “I made a mistake and bought plain digestives instead of chocolate ones.”