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  1. Oxford American Dictionary

    cylinder head

    • IPA[ˈsiləndər hed]
    • n.
      the end cover of a cylinder in an internal combustion engine, against which the piston compresses the cylinder's contents.

    • noun: cylinder head, plural noun: cylinder heads

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    cylinder head

    • n.
      the end cover of a cylinder in an internal combustion engine, against which the piston ...

    Oxford Dictionary