pitch in
phrasal verbpitch in (with somebody/something)
- (informal) to join in and help with an activity, by doing some of the work or by giving money, advice, etc.
- Everyone pitched in with the work.
- Local companies pitched in with building materials and labour.
pitch something in
- to give a particular amount of money in order to help with something
- We all pitched in $10 to buy her a gift.