LEARNit Dictionary
pitch in
phrasal verb
1
to join in and help with an activity, by doing some of the work or by giving money, advice, etc.
کمک کردن, همکاری کردن, دست به کار شدن, مشارکت کردن, یاری رساندن
2
to give a particular amount of money in order to help with something
مشارکت مالی کردن, پشتیبانی مالی کردن
We all pitched in $10 to buy her a gift.