The Collaborative International Dictionary of English v.0.48:

Furrow \Fur"row\, n. [OE. forow, forgh, furgh, AS. furh; akin to
   D. voor, OHG. furuh, G. furche, Dan. fure, Sw. f?ra, Icel.
   for drain, L. porca ridge between two furrows.]
   1. A trench in the earth made by, or as by, a plow.
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   2. Any trench, channel, or groove, as in wood or metal; a
      wrinkle on the face; as, the furrows of age.
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   Farrow weed a weed which grows on plowed land. --Shak.

   To draw a straight furrow, to live correctly; not to
      deviate from the right line of duty. --Lowell.
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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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WordNet (r) 3.0 (2006):

furrow
    n 1: a long shallow trench in the ground (especially one made by
         a plow)
    2: a slight depression in the smoothness of a surface; "his face
       has many lines"; "ironing gets rid of most wrinkles" [syn:
       wrinkle, furrow, crease, crinkle, seam, line]
    v 1: hollow out in the form of a furrow or groove; "furrow soil"
         [syn: furrow, rut, groove]
    2: make wrinkled or creased; "furrow one's brow" [syn: furrow,
       wrinkle, crease]
    3: cut a furrow into a columns [syn: furrow, chamfer,
       chase]