The Collaborative International Dictionary of English v.0.48:

Furrow \Fur"row\, v. t. [imp. & p. p. Furrowed; p. pr. & vb.
   n. Furrowing.] [From Furrow, n.; cf. AS. fyrian.]
   1. To cut a furrow in; to make furrows in; to plow; as, to
      furrow the ground or sea. --Shak.
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   2. To mark with channels or with wrinkles.
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            Thou canst help time to furrow me with age. --Shak.
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            Fair cheeks were furrowed with hot tears. --Byron.
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