to join in or interrupt a conversation; to add sth to a conversation or discussion
chip in (with sth)
to join in or interrupt a conversation; to add sth to a conversation or discussion
Pete and Anne chipped in with suggestions.
chip in (with sth)
to give some money so that a group of people can buy sth together
If everyone chips in we'll be able to buy her a really nice present.
Definiciones del Oxford Advanced Learner's Dictionary, 9.ª edición