pitch in

Related to pitch in: chip in, tones down

pitch in

1. To help out; to contribute or assist. Jim is always willing to pitch in with any housework that needs doing. Let me know if I can pitch in at all.
2. To throw, toss, or discard something casually in(to something else). In this usage, a noun or pronoun can be used between "pitch" and "in." The trunk should be empty, so just pitch your gear in. Here's the trash can—go ahead and pitch in those wrappers.
See also: pitch
Farlex Dictionary of Idioms.

pitch in (and help) (with something)

Fig. to join in and help someone with something. Would you please pitch in and help with the party? Come on! Pitch in!
See also: pitch
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

pitch in

1. Set to work vigorously, as in We pitched right in and started mowing the field. [Colloquial; second half of 1800s]
2. Join forces with others; help, cooperate. For example, We were hoping you'd pitch in and sort the books. Also see pitch into.
See also: pitch
The American Heritage® Dictionary of Idioms by Christine Ammer.

pitch in

v.
1. To contribute something toward some general pool or effort: We all pitched in $10 to buy the couple a wedding gift. After the earthquake, local businesses pitched in with donations of food and water. When it was time to clean up the park, the neighbors pitched in.
2. To set to work vigorously: The grass had to be cut, so I started the lawn mower and pitched in.
See also: pitch
The American Heritage® Dictionary of Phrasal Verbs.

pitch in

verb
See pitch in and help
See also: pitch
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • pitch in and help
  • pitch character
  • pull the string
  • pitch on
  • muck in
  • heater
  • fire in (one's)/the belly
  • fire in the belly
  • fire in your belly
  • paint the black