blunderbuss

from WordNet (r) 3.0 (2006)
blunderbuss
    n 1: a short musket of wide bore with a flared muzzle
    
from The Collaborative International Dictionary of English v.0.48
Blunderbuss \Blun"der*buss\, n. [Either fr. blunder + D. bus
   tube, box, akin to G. b["u]chse box, gun, E. box; or
   corrupted fr. D. donderbus (literally) thunder box, gun,
   musket.]
   1. A short gun or firearm, with a large bore, capable of
      holding a number of balls, and intended to do execution
      without exact aim.
      [1913 Webster]

   2. A stupid, blundering fellow.
      [1913 Webster]
    

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