( 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.
( 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.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005