sandhog definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a laborer employed in underground or underwater construction projects, working under compressed air, as in a caisson or tunnel
sandhog definition by American Heritage Dictionary
A laborer who works inside a caisson, as in the construction of underwater tunnels.