[1] : The Collaborative International Dictionary of English v.0.48

sea anchor \sea" an"chor\ naut.
   see drag sail, under 4th drag.
   1913 webster
see also:
drag sail drag 

[2] : The Collaborative International Dictionary of English v.0.48

drag \drag\, n. see drag, v. t., and cf. dray a cart, and
   1st dredge.
   1. the act of dragging; anything which is dragged.
      1913 webster

   2. a net, or an apparatus, to be drawn along the bottom under
      water, as in fishing, searching for drowned persons, etc.
      1913 webster

   3. a kind of sledge for conveying heavy bodies; also, a kind
      of low car or handcart; as, a stone drag.
      1913 webster

   4. a heavy coach with seats on top; also, a heavy carriage.
      collog. --thackeray.
      1913 webster

   5. a heavy harrow, for breaking up ground.
      1913 webster

   6.
      a anything towed in the water to retard a ship's
          progress, or to keep her head up to the wind; esp., a
          canvas bag with a hooped mouth, so used. see drag
          sail below.
      b also, a skid or shoe, for retarding the motion of a
          carriage wheel.
      c hence, anything that retards; a clog; an obstacle to
          progress or enjoyment.
          1913 webster

                my lectures were only a pleasure to me, and no
                drag.                             --j. d.
                                                  forbes.
          1913 webster

   7. motion affected with slowness and difficulty, as if
      clogged. "had a drag in his walk." -- hazlitt.
      1913 webster

   8. founding the bottom part of a flask or mold, the upper
      part being the cope.
      1913 webster

   9. masonry a steel instrument for completing the dressing
      of soft stone.
      1913 webster

   10. marine engin. the difference between the speed of a
       screw steamer under sail and that of the screw when the
       ship outruns the screw; or between the propulsive effects
       of the different floats of a paddle wheel. see citation
       under drag, v. i., 3.
       1913 webster

   drag sail naut., a sail or canvas rigged on a stout
      frame, to be dragged by a vessel through the water in
      order to keep her head to the wind or to prevent drifting;
      -- called also drift sail, drag sheet, drag anchor,
      sea anchor, floating anchor, etc.

   drag twist mining, a spiral hook at the end of a rod for
      cleaning drilled holes.
      1913 webster
see also:
drag dray dredge drag sail drag sail drift sail 
drag sheet drag anchor sea anchor floating anchor drag twist 

[3] : WordNet (r) 2.0

sea anchor
     n : restraint consisting of a canvas covered frame that floats
         behind a vessel; prevents drifting or maintains the
         heading into a wind syn: drogue
see also:
drogue 

Anchor >> A Words
Anchor, definition of term: Anchor
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Anchor Point >> A Words
Anchor Point, definition of term: Anchor Point
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Caribbean Sea, definition of term: Caribbean Sea
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Adriatic Sea, definition of term: Adriatic Sea
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Baltic Sea >> B Words
Baltic Sea, definition of term: Baltic Sea
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