pitch in

Verb

pitch in (third-person singular simple present pitches in, present participle pitching in, simple past and past participle pitched in)

1. (idiomatic, intransitive, transitive) To help out; lend assistance; contribute; to do one's part to help.
   • If we all pitch in, we can raise enough money for the renovation of the church.
   • He spent 20 minutes one afternoon describing the club he'd formed with other teenagers in his Brooklyn neighborhood. They'd each pitched in a buck a month to rent the basement of a mallet factory, which they used as a clubhouse.2008 October, Davy Rothbart, “How I caught up with dad”, in Men's Health, volume 23, number 8, →ISSN, page 112
2. (intransitive) To begin briskly.