sandhog

/ˈsændhɔɡ/
noun
  1. A worker who digs tunnels or underground passages, especially in compressed-air conditions.
    • Many sandhogs in New York City helped construct the water tunnels that supply the city.
    • The sandhogs worked in shifts to build the new subway tunnel beneath the river.
    • Being a sandhog is dangerous work, requiring skill and courage in tight, dark spaces.
Synonyms
What does "sandhog" mean? | whatsthatwordmean | whatsthatwordmean