riser

definition: structural member consisting of the vertical part of a stair or step
example:
speech part: noun
synonyms:
definition: a vertical pipe in a building
example:
speech part: noun
synonyms: riser pipe riser pipeline riser main
definition: a person who rises (especially from bed)
example: he's usually a late riser
speech part: noun
synonyms:

How riser is being used?