The Collaborative International Dictionary of English v.0.48:

Gibbet \Gib"bet\, v. t. [imp. & p. p. Gibbeted; p. pr. & vb.
   n. Gibbeting.]
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   1. To hang and expose on a gibbet.
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   2. To expose to infamy; to blacken.
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            I'll gibbet up his name.              --Oldham.
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