sandgun

noun3

1. •
   A pipe that is used to suck up objects from a river or sea bed.

   • The air lift, or sandgun, sucks up the sand and mud, expelling particles everywhere, unless a tide is running. — 1967
2. •
   A weapon that shoots sand or a sandlike substance.

   • If someone deliberately set off the sandgun, I think I'm very possibly what they were aiming for. — 2013
3. •
   (rare) A device used to sandblast; sandblaster.

   • This engine has shields fitted which seemed to lift the exhaust better than the ordinary streamline casing of 21C9, and an L.M.S.R. sandgun which was used en route had good effect. — 1944