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

rabbit \rab"bit\ ra^b"bi^t, n. oe. rabet, akin to od.
   robbe, robbeken. zool.
   any of the smaller species of the genus lepus, especially the
   common european species lepus cuniculus, which is often
   kept as a pet, and has been introduced into many countries.
   it is remarkably prolific, and has become a pest in some
   parts of australia and new zealand.
   1913 webster

   note: the common american rabbit lepus sylvatica is
         similar but smaller. see cottontail, and jack
         rabbit, under 2d jack. the larger species of lepus
         are commonly called hares. see hare.
         1913 webster

   angora rabbit zool., a variety of the domestic rabbit
      having long, soft fur.

   rabbit burrow, a hole in the earth made by rabbits for
      shelter and habitation.

   rabbit fish. zool.
   a the northern chimaera chimaera monstrosa.
   b any one of several species of plectognath fishes, as the
       bur fish, and puffer. the term is also locally applied to
       other fishes.

   rabbits' ears. bot. see cyclamen.

   rabbit warren, a piece of ground appropriated to the
      breeding and preservation of rabbits. --wright.

   rock rabbit.
   a zool. see daman, and klipdas.
   b the pika.

   welsh rabbit, a dish of which the chief constituents are
      melted cheese over toasted bread, flavored in various
      ways, as with ale, beer, milk, or spices. the name is
      popularly said to be a corruption of welsh rare bit, but
      it is probably merely a humorous designation; -- also
      called welsh rarebit.
      1913 webster
see also:
lepus cuniculus lepus sylvatica cottontail jack rabbit jack hare 
angora rabbit rabbit burrow rabbit fish chimaera monstrosa rabbits' ears 
cyclamen rabbit warren rock rabbit daman klipdas 
pika welsh rabbit welsh rare bit welsh rarebit 

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

welsh \welsh\, a. as. waelisc, welisc, from wealh a stranger,
   foreigner, not of saxon origin, a welshman, a celt, gael;
   akin to ohg. walh, whence g. waumlsch or welsch, celtic,
   welsh, italian, french, foreign, strange, ohg. walhisc; from
   the name of a celtic tribe. see walnut.
   of or pertaining to wales, or its inhabitants. sometimes
   written also welch.
   1913 webster

   welsh flannel, a fine kind of flannel made from the fleece
      of the flocks of the welsh mountains, and largely
      manufactured by hand.

   welsh glaive, or welsh hook, a weapon of war used in
      former times by the welsh, commonly regarded as a kind of
      poleax. --fairholt. --craig.

   welsh mortgage o. eng. law, a species of mortgage, being
      a conveyance of an estate, redeemable at any time on
      payment of the principal, with an understanding that the
      profits in the mean time shall be received by the
      mortgagee without account, in satisfaction of interest.
      --burrill.

   welsh mutton, a choice and delicate kind of mutton obtained
      from a breed of small sheep in wales.

   welsh onion bot., a kind of onion allium fistulosum
      having hollow inflated stalks and leaves, but scarcely any
      bulb, a native of siberia. it is said to have been
      introduced from germany, and is supposed to have derived
      its name from the german term waumlsch foreign.

   welsh parsley, hemp, or halters made from hemp. obs. 
      jocular --j. fletcher.

   welsh rabbit. see under rabbit.
      1913 webster
see also:
walnut welch welsh flannel welsh glaive welsh hook welsh mortgage 
welsh mutton welsh onion allium fistulosum welsh parsley welsh rabbit 
rabbit 

[3] : WordNet (r) 2.0

welsh rabbit
     n : cheese melted with ale or beer served over toast syn: welsh
         rarebit, rarebit
see also:
welsh rarebit rarebit 

Welsh >> W Words
Welsh, definition of term: Welsh
welsh_pag1.html

Rabbit >> R Words
Rabbit, definition of term: Rabbit
rabbit_pag1.html

Rabbit Punch >> R Words
Rabbit Punch, definition of term: Rabbit Punch
rabbit+punch_pag1.html

Rabbit Hole >> R Words
Rabbit Hole, definition of term: Rabbit Hole
rabbit+hole_pag1.html

Jack Rabbit >> J Words
Jack Rabbit, definition of term: Jack Rabbit
jack+rabbit_pag1.html