GNU Collaborative International Dictionary of English

Found one definition

  1.       
    Amerce (ȧmẽrs), v. t. [imp. & p. p. Amerced (ȧmẽrst); p. pr. & vb. n. Amercing.] [OF. amercier, fr. a merci at the mercy of, liable to a punishment. See Mercy.]
    1. To punish by a pecuniary penalty, the amount of which is not fixed by law, but left to the discretion of the court; as, “the court amerced the criminal in the sum of one hundred dollars”.

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    ☞ The penalty or fine may be expressed without a preposition, or it may be introduced by in, with, or of.

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    2. To punish, in general; to mulct.

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    Millions of spirits for his fault amerced

    Of Heaven. Milton.

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    Shall by him be amerced with penance due. Spenser.

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