Source : Webster's Revised Unabridged Dictionary (1913)

Marlin \Mar"lin\, n. (Zo["o]l.)
   The American great marbled godwit ({Limosa fedoa}). Applied
   also to the red-breasted godwit ({Limosa h[ae]matica}).

   {Hook-billed marlin}, a curlew.

Source : WordNet®

marlin
     n : large long-jawed oceanic sport fishes; related to sailfishes
         and spearfishes; not completely cold-blooded i.e. able to
         warm their brains and eyes [syn: {spearfish}]