ଅର୍ଥ : A person who rises (especially from bed).
ଉଦାହରଣ :
He's usually a late riser.
ଅର୍ଥ : A vertical pipe in a building.
ସମକକ୍ଷ : riser main, riser pipe, riser pipeline
ଅର୍ଥ : Structural member consisting of the vertical part of a stair or step.