a blowtube is a form of:

Blowtube



ENGLISH MEANING
noun
1.
A similar instrument, commonly of tin, used by boys for discharging paper wads and other light missiles.
2.
A long wrought iron tube, on the end of which the workman gathers a quantity of "metal" (melted glass), and through which he blows to expand or shape it; -- called also blowing tube, and blowpipe.
1.
A blowgun