ˈ ̷ ̷ˌ ̷ ̷ noun
1. : a small tubular instrument for directing a jet of air or other gas into a flame so as to concentrate and increase the heat, used especially in analysis in which the nature of a substance is studied by means of its characteristic behavior (as with respect to fusibility, flame coloration, or formation of volatile coatings) when exposed to the flame
2.
a. : a small simple tubular instrument tapered to a straight or slightly curved tip used in anatomy and zoology for revealing or cleaning a cavity
b. : a blowgun for ejecting compressed air
3. : blowgun 1
4. or blowing pipe : a long metal tube on the end of which a glassmaker gathers a quantity of molten glass and through which he blows to expand and shape it
5. : blowtorch ; especially : one using acetylene and oxygen (as for cutting metal or welding)