Source : Webster's Revised Unabridged Dictionary (1913)

Martin \Mar"tin\, n. (Stone Working) [Etymol. uncertain.]
   A perforated stone-faced runner for grinding.

Martin \Mar"tin\, n. [F. martin, from the proper name Martin.
   Cf. {Martlet}.] (Zo["o]l.)
   One of several species of swallows, usually having the tail
   less deeply forked than the tail of the common swallows.
   [Written also {marten}.]

   Note: The American purple martin, or bee martin ({Progne
         subis, or purpurea}), and the European house, or
         window, martin ({Hirundo, or Chelidon, urbica}), are
         the best known species.

   {Bank martin}.
   (a) The bank swallow. See under {Bank}.
   (b) The fairy martin. See under {Fairy}.

   {Bee martin}.
   (a) The purple martin.
   (b) The kingbird.

   {Sand martin}, the bank swallow.

Source : WordNet®

Martin
     n 1: French bishop who is a patron saint of France (died in 397)
          [syn: {St. Martin}]
     2: United States actor and comedian (born in 1945) [syn: {Steve
        Martin}]
     3: United States actress (1913-1990) [syn: {Mary Martin}]
     4: United States singer (1917-1995) [syn: {Dean Martin}, {Dino
        Paul Crocetti}]
     5: any of various swallows with squarish or slightly forked
        tail and long pointed wings; migrate around Martinmas