The Collaborative International Dictionary of English v.0.48:

Harm \Harm\, v. t. [imp. & p. p. Harmed (h[aum]rmd); p. pr. &
   vb. n. Harming.] [OE. harmen, AS. hearmian. See Harm, n.]
   To hurt; to injure; to damage; to wrong.
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         Though yet he never harmed me.           --Shak.
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         No ground of enmity between us known
         Why he should mean me ill or seek to harm. --Milton.
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