1 intr. (often foll. by in) take pleasure freely.
2 tr. yield freely to (a desire etc.).
3 tr. gratify the wishes of; favour (indulged them with money).
4 intr. colloq. take alcoholic liquor.
Derivatives:
indulger n.
Etymology: L indulgere indult- give free rein to
Useful english dictionary. 2012.