Blowpipe

a tube through which a stream of air or gas is forced into a flame to concentrate and increase its heating action.
Also called blow-iron, blowtube. Glass Blowing. a long metal pipe used to gather and blow the molten glass in making hollowware.
blowgun.
Medicine/Medical. an instrument used to observe or clean a cavity.
Historical Examples

Wanderings in South America Charles Waterton
The Silent Bullet Arthur B. Reeve
The International Monthly, Volume 4, No. 3, October, 1851 Various
Tales of the Malayan Coast Rounsevelle Wildman
A System of Instruction in the Practical Use of the Blowpipe Anonymous
The Wanderers W.H.G. Kingston
Steel Charles Rumford Walker
A Dictionary of Arts, Manufactures and Mines Andrew Ure
Summary Narrative of an Exploratory Expedition to the Sources of the Mississippi River, in 1820 Henry Rowe Schoolcraft
A Dictionary of Arts, Manufactures and Mines Andrew Ure

noun
a long tube from which pellets, poisoned darts, etc, are shot by blowing US word blowgun
Also called blow tube. a tube for blowing air or oxygen into a flame to intensify its heat and direct it onto a small area
a long narrow iron pipe used to gather molten glass and blow it into shape