dry riser
noun
a vertical pipe, not containing water, having connections on different floors of a building for a fireman's hose to be attached. A fire tender can be connected at the lowest level to make water rise under pressure within the pipe
Abbreviation: DR
Words nearby dry riser
dry plate,
dry pleurisy,
dry point,
dry puddling,
dry rale,
dry riser,
dry rot,
dry rot fungus,
dry run,
dry sink,
dry slope