Source : Webster's Revised Unabridged Dictionary (1913)

Welsh \Welsh\, a. [AS. w[ae]lisc, welisc, from wealh a stranger,
   foreigner, not of Saxon origin, a Welshman, a Celt, Gael;
   akin to OHG. walh, whence G. w["a]lsch 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}.]

   {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 w["a]lsch foreign.

   {Welsh parsley}, hemp, or halters made from hemp. [Obs. &
      Jocular] --J. Fletcher.

   {Welsh rabbit}. See under {Rabbit}.

Welsh \Welsh\, n.
   1. The language of Wales, or of the Welsh people.

   2. pl. The natives or inhabitants of Wales.

   Note: The Welsh call themselves Cymry, in the plural, and a
         Welshman Cymro, and their country Cymru, of which the
         adjective is Cymreig, and the name of their language
         Cymraeg. They are a branch of the Celtic family, and a
         relic of the earliest known population of England,
         driven into the mountains of Wales by the Anglo-Saxon
         invaders.

Welsh \Welsh\, v. t. & i.
   (a) To cheat by avoiding payment of bets; -- said esp. of an
       absconding bookmaker at a race track. [Slang]
   (b) To avoid dishonorably the fulfillment of a pecuniary
       obligation. [Slang]

Source : WordNet®

Welsh
     adj : of or relating to or characteristic of Wales or its people
           or their language; "the Welsh coast"; "Welsh syntax"
           [syn: {Cambrian}]

Welsh
     n 1: a native or resident of Wales [syn: {Welshman}, {Cambrian}]
     2: a Celtic language of Wales
     3: Welsh breed of dual-purpose cattle [syn: {Welsh Black}]