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pitch something into somethingand pitch something in
to toss or throw something into something. Please pitch your aluminum cans into this container. She pitched in the can.
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]
1. To throw or toss something or someone into something: She pitched the plastic cup into the garbage can.
2. To attack someone verbally or physically; assault someone: They pitched into the photographer for taking their picture without permission.