Underground canal Synonyms

Definitions for Underground


  • (adjective) undertaken or done so as to escape being observed or known by others
  • (adjective) being, situated, or operating beneath the surface of the earth
  • (noun) a secret organization in a conquered country fighting against enemy forces

Definitions for Canal


  • (noun) an open man-made passageway for water
  • (noun) long and narrow strip of water made for boats or for irrigation
  • (noun) (astronomy) an indistinct surface feature of Mars once thought to be a system of channels; they are now believed to be an optical illusion