noun a blowgun.
2. blowtube ·noun a similar instrument, commonly of tin, used by boys for discharging paper wads and other light missiles.
3. blowtube ·noun 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.