pitch in

pitch in  {v.},  {informal}
1. To begin something with much energy; start work eagerly.
Pitch in and we will finish the job as soon as possible.
2. To give help or money for something; contribute.
Everyone must pitch in and work together.
We all pitched in a quarter to buy Nancy a present.
Syn.: CHIP IN. Compare: FALL TO.
Categories: {informal} {v.}