1. a tube through which air or gas is blown, especially one used to direct a stream of air or to propel a projectile
Usage: also called blowgun or blowpipe
2. a tube used in glassblowing or metalworking to blow air into a furnace or onto molten material
Usage: technical, crafts

Examples

• The hunter used a blowtube to shoot a dart at the target.
• Children played with toy blowtubes in the park.
• The glassblower heated the furnace with a blowtube.
• A blowtube is a simple weapon used in some indigenous cultures.
• He blew through the blowtube to propel the small projectile across the room.