drencher

English

Etymology

From Middle English *drencher (found in the Surname Drencher), equivalent to drench +‎ -er.

Noun

drencher (plural drenchers)

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.
   • 2008, John Ridley, John Channing, Safety at Work, page 675:

     A second system of conventional dry sprinkler heads is interspersed with the drencher heads.

   • 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.