burbolt \bur"bolt`\, n.
   a birdbolt. obs. --ford.
   1913 webster

burbot \bur"bot\, n. f. barbote, fr. barbe beard. see 1st
   barb. zool.
   a fresh-water fish of the genus lota, having on the nose
   two very small barbels, and a larger one on the chin.
   written also burbolt.
   1913 webster

   note: the fish is also called an eelpout or ling, and is
         allied to the codfish. the lota vulgaris is a common
         european species. an american species lota maculosa
         is found in new england, the great lakes, and farther
         north.
         1913 webster
see also:
barb lota burbolt eelpout ling lota vulgaris 
lota maculosa