chip in
verb
RareNot in standard dictionaries
1
To make a contribution; help in a small way; especially, to pay for a part of something.
2
To contribute (for, to, or toward something).
3
To contribute (something).
4
To ante; to put into the pot the amount of chips or money required to continue.
5
To interrupt a discussion for the purpose of making a comment.
6
To put a chip shot in the hole.
7
To join in (something); to butt in or contribute (something) to a conversation; to say (something).
#informal#slang