The Collaborative International Dictionary of English v.0.48:

Goat \Goat\ (g[=o]t), n. [OE goot, got, gat, AS. g[=a]t; akin to
   D. geit, OHG. geiz, G. geiss, Icel. geit, Sw. get, Dan. ged,
   Goth. gaits, L. haedus a young goat, kid.] (Zool.)
   A hollow-horned ruminant of the genus Capra, of several
   species and varieties, esp. the domestic goat (Capra
   hircus), which is raised for its milk, flesh, and skin.
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   Note: The Cashmere and Angora varieties of the goat have
         long, silky hair, used in the manufacture of textile
         fabrics. The wild or bezoar goat (Capra [ae]gagrus),
         of Asia Minor, noted for the bezoar stones found in its
         stomach, is supposed to be one of the ancestral species
         of the domestic goat. The Rocky Mountain goat
         (Haplocercus montanus) is more nearly related to the
         antelopes. See Mazame.
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   Goat antelope (Zool), one of several species of antelopes,
      which in some respects resemble a goat, having recurved
      horns, a stout body, large hoofs, and a short, flat tail,
      as the goral, thar, mazame, and chikara.

   Goat fig (Bot.), the wild fig.

   Goat house.
   (a) A place for keeping goats.
   (b) A brothel. [Obs.]

   Goat moth (Zool.), any moth of the genus Cossus, esp. the
      large European species (Cossus ligniperda), the larva of
      which burrows in oak and willow trees, and requires three
      years to mature. It exhales an odor like that of the
      he-goat.

   Goat weed (Bot.), a scrophulariaceous plant, of the genus
      Capraria (Capraria biflora).

   Goat's bane (Bot.), a poisonous plant (Aconitum
      Lucoctonum), bearing pale yellow flowers, introduced from
      Switzerland into England; wolfsbane.

   Goat's foot (Bot.), a kind of wood sorrel (Oxalis
      caprina) growing at the Cape of Good Hope.

   Goat's rue (Bot.), a leguminous plant (Galega officinalis
      of Europe, or Tephrosia Virginiana in the United
      States).

   Goat's thorn (Bot.), a thorny leguminous plant (Astragalus
      Tragacanthus), found in the Levant.

   Goat's wheat (Bot.), the genus Tragopyrum (now referred
      to Atraphaxis).
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The Collaborative International Dictionary of English v.0.48:

Rue \Rue\ (r[udd]), n. [F. rue, L. ruta, akin to Gr. "ryth`; cf.
   AS. r[=u]de.]
   1. (Bot.) A perennial suffrutescent plant (Ruta
      graveolens), having a strong, heavy odor and a bitter
      taste; herb of grace. It is used in medicine.
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            Then purged with euphrasy and rue
            The visual nerve, for he had much to see. --Milton.
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            They [the exorcists] are to try the devil by holy
            water, incense, sulphur, rue, which from thence, as
            we suppose, came to be called herb of grace. --Jer.
                                                  Taylor.
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   2. Fig.: Bitterness; disappointment; grief; regret.
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   Goat's rue. See under Goat.

   Rue anemone, a pretty springtime flower (Thalictrum
      anemonides) common in the United States.

   Wall rue, a little fern (Asplenium Ruta-muraria) common
      on walls in Europe.
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