The Collaborative International Dictionary of English v.0.48:

Ruffed \Ruffed\, a.
   Furnished with a ruff.
   [1913 Webster]

   Ruffed grouse (Zool.), a North American grouse (Bonasa
      umbellus) common in the wooded districts of the Northern
      United States. The male has a ruff of brown or black
      feathers on each side of the neck, and is noted for the
      loud drumming sound he makes during the breeding season.
      Called also tippet grouse, partridge, birch
      partridge, pheasant, drummer, and white-flesher.

   ruffed lemur (Zool.), a species of lemur (lemur varius)
      having a conspicuous ruff on the sides of the head. Its
      color is varied with black and white. Called also ruffed
      maucaco.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Birch \Birch\ (b[~e]rch), n.; pl. Birches (-[e^]z). [OE.
   birche, birk, AS. birce, beorc; akin to Icel. bj["o]rk, Sw.
   bj["o]rk, Dan. birk, D. berk, OHG. piricha, MHG. birche,
   birke, G. birke, Russ. bereza, Pol. brzoza, Serv. breza, Skr.
   bh[=u]rja. [root]254. Cf. 1st Birk.]
   1. A tree of several species, constituting the genus
      Betula; as, the white or common birch (Betula alba)
      (also called silver birch and lady birch); the dwarf birch
      (Betula glandulosa); the paper or canoe birch (Betula
      papyracea); the yellow birch (Betula lutea); the black
      or cherry birch (Betula lenta).
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   2. The wood or timber of the birch.
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   3. A birch twig or birch twigs, used for flogging.
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   Note: The twigs of the common European birch (B. alba), being
         tough and slender, were formerly much used for rods in
         schools. They were also made into brooms.
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               The threatening twigs of birch.    --Shak.
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   4. A birch-bark canoe.
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   Birch of Jamaica, a species (Bursera gummifera) of
      turpentine tree.

   Birch partridge. (Zool.) See Ruffed grouse.

   Birch wine, wine made of the spring sap of the birch.

   Oil of birch.
      (a) An oil obtained from the bark of the common European
          birch (Betula alba), and used in the preparation of
          genuine (and sometimes of the imitation) Russia
          leather, to which it gives its peculiar odor.
      (b) An oil prepared from the black birch (Betula lenta),
          said to be identical with the oil of wintergreen, for
          which it is largely sold.
          [1913 Webster]