A short gun or firearm with a large bore and funnel-shaped muzzle, capable of holding a number of balls or slugs, and intended to be used at a limited range without exact aim. It has been long obsolete in civilized countries.
The gentleman in the coach pulled out a blunderbuss, but Doyle soon quelled him by clapping a pistol to his nose, telling him that if he stirred hand or foot he was a dead man.
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Lives Of The Most Remarkable Criminals Who have been Condemned and Executed
He saw a blunderbuss, a musket with a shortened barrel, pointed at him.
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A Place Called Freedom
This was a task for all hands, and after much labour we got the boats into safe positions among the rocks and made fast the painters to big boulders.
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The Greatest Survival Stories Ever Told
I unhesitatingly predict, Inspector, that if you search Mills's flat you'll find some kind of smoothbore gun, maybe a blunderbuss or even a shotgun.
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Ellery Queen Mystery Magazine
Alteration of Dutch donderbus : donder, thunder (from Middle Dutch doner; see (s)tenə- in Indo-European roots) + bus, gun (from Middle Dutch busse, tube, from Latin buxis, box; see box1).
In 17th century also blunderbus and blunderbush; apparently a modification, prob. with humorous allusion to its blundering or random action, of Dutchdonderbus (= Germandonnerbüchse), a blunderbuss, from donder (= Germandonner = Englishthunder) + bus, a box, urn, barrel of a gun, same as buis, a tube, pipe, = Germanbüchse, a box, pot, barrel of a gun, pipe, etc., = Englishbox. Cf. the equivalent G. blunderbüchse, in imitation of the English, but prob. with a thought of plunder, baggage, lumber (Englishplunder), in allusion to its heaviness. A charter of James I. (1617) mentions “plantier-busse, alias blanterbusse,” as equivalent to harquebuse, but the first element here is different, ult. from Latinplantare, plant (fix). Cf. Scotsblunyierd, an old gun, any old rusty weapon.