drencher

Etymology
From *drencher (found in the Surname ), equivalent to.

Noun

 * 1) One who, or that which, drenches.
 * 2) A fire prevention device, like a sprinkler but ejecting a denser curtain of water and sometimes mounted on the outside of a building to prevent the spread of fire from those nearby.
 * 3) * 1950, Great Britain. Ministry of Public Building and Works, Post-war Building Studies (issues 28-31, page 14)
 * The drencher supply should also be separate from the sprinkler supply.
 * The drencher supply should also be separate from the sprinkler supply.