coin changer

noun
  1. a machine that gives change rapidly, as to a customer, typically operated by a manual keyboard and often used in association with a cash register.
  2. a machine that supplies change, as small coins for large or large coins for small, especially for the use of other coin-operated machines.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018