Rud

from The Collaborative International Dictionary of English v.0.48

Rud \Rud\, n. [AS. rudu, akin to re['a]d red. [root]113. See
   {Red}, and cf. {Ruddy}.]
   1. Redness; blush. [Obs.]
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   2. Ruddle; red ocher.
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   3. (Zool.) The rudd.
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from The Collaborative International Dictionary of English v.0.48

Rud \Rud\, v. t.
   To make red. [Obs.] --Spenser.
   [1913 Webster]