pitch into

pitch into idiom
Attack, assault, either physically or verbally. For example, Aunt Sally pitched into Uncle Rob when he forgot to go to the bank. [Colloquial; first half of 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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