supplement

Collective Dictionary definition of supplement

1. 1.noun

   нэмэгдэл, үйлчилгээний нэмэгдэл, хавсралт

   something that is added to something else in order to improve it or complete it; something extra

   - The money I get from teaching evening classes provides a supplement to my main income.

2. 2.verb

   нэмж уух/хэрэглэх

   to add something to something to make it larger or better

   - He supplements (= adds to) his income by working in a bar at night.