Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun riser

3 senses of riser

Sense 1
riser -- (a person who rises (especially from bed); "he's usually a late riser")
       => person, individual, someone, somebody, mortal, soul -- (a human being; "there was too much for one person to do")

Sense 2
riser, riser pipe, riser pipeline, riser main -- (a vertical pipe in a building)
       => pipe, pipage, piping -- (a long tube made of metal or plastic that is used to carry water or oil or gas etc.)

Sense 3
riser -- (structural member consisting of the vertical part of a stair or step)
       => structural member -- (support that is a constituent part of any structure or building)