chip in

From Wiktionary

Expression[change]

Expression
chip in

  1. (idiomatic) If you chip in to something, you help out in a small way or pay for part of something.
    Everyone chipped in and bought a gift for him.
  2. (idiomatic) If you chip in something, you help out or contribute something.
    He chipped in most of the cost of the item.

Related words[change]