blunderbuss Meaning, Definition & Usage

  1. noun a short musket of wide bore with a flared muzzle

WordNet

Blun"der*buss noun
Etymology
Either fr. blunder + D. bus tube, box, akin to G. büchse box, gun, E. box; or corrupted fr. D. donderbus (literally) thunder box, gun, musket.
Definitions
  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.
  2. A stupid, blundering fellow.

Webster 1913