pitch in

pitch ¹  (pch)

n.

1. Any of various thick, dark, sticky substances obtained from the distillation residue of coal tar, wood tar, or petroleum and used for waterproofing, roofing, caulking, and paving.

2. Any of various natural bitumens, such as mineral pitch or asphalt.

3. A resin derived from the sap of various coniferous trees, as the pines.

tr.v. pitched, pitch·ing, pitch·es

To smear or cover with or as if with pitch.

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[Middle English pich, from Old English pic and from Anglo-Norman piche, both from Latin pix, pic-.]

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pitch in

Verb

to cooperate or contribute

Thesaurus

Verb

1.

pitch in - eat heartily; "The food was placed on the table and the children pitched in" dig in eat - take in solid food; "She was eating a banana"; "What did you eat for dinner last night?"