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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