To pitch into

Pitch \Pitch\, v. t. [OE. picchen; akin to E. pick, pike.]
   1. To throw, generally with a definite aim or purpose; to
      cast; to hurl; to toss; as, to pitch quoits; to pitch hay;
      to pitch a ball.
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   2. To thrust or plant in the ground, as stakes or poles;
      hence, to fix firmly, as by means of poles; to establish;
      to arrange; as, to pitch a tent; to pitch a camp.
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   3. To set, face, or pave with rubble or undressed stones, as
      an embankment or a roadway. --Knight.
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   4. To fix or set the tone of; as, to pitch a tune.
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   5. To set or fix, as a price or value. [Obs.] --Shak.
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   {Pitched battle}, a general battle; a battle in which the
      hostile forces have fixed positions; -- in distinction
      from a skirmish.

   {To pitch into}, to attack; to assault; to abuse. [Slang]
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