What is the meaning of Blowpipe?

A narrow tube through which a jet of air is directed onto a flame; used in the analysis of minerals etc and in jewelry manufacture.

A weapon through which darts may be shot by blowing; a blowgun.

A long narrow pipe, rotated in the hands, upon which glassware is blown.

To direct air through a blowpipe.

To shoot with a blowpipe (weapon).

Source: wiktionary.org