IPA: /ˈbloʊˌtjuːb/
KK: /ˈbloʊˌtub/
A long tube used to blow air or smoke, often for shooting darts or in metalworking.
He used a blowtube to shoot the dart accurately at the target.
The word 'blowtube' is formed from 'blow' (from Old English 'blāwan', meaning to emit air) and 'tube' (from Latin 'tubus', meaning a pipe or cylinder). The term 'blowtube' refers to a tube through which air is blown.
Think of 'blowing' air through a 'tube' — that's how you remember that a blowtube is a tube for blowing air.
No commonly confused words.