A component of a fire safety system of a building, installed in the ceiling to discharge water automatically into a room in the event of a fire; = "sprinkler"; also attributive, especially in "fire sprinkler system".
Origin
Mid 19th century.
Definition of fire sprinkler in US English:
fire sprinkler
noun
A component of a fire safety system of a building, installed in the ceiling to discharge water automatically into a room in the event of a fire; = "sprinkler"; also attributive, especially in "fire sprinkler system".