Riser

n.	1.	One who rises; as, an early riser.
	2.	(Arch.) The upright piece of a step, from tread to tread.
	3.	(Mining) A shaft excavated from below upward.
	4.	(Founding) A feed head. See under Feed, n.

Noun	1.	riser - a person who rises (especially from bed); "he's usually a late riser"
	2.	riser - a vertical pipe in a building Synonyms: riser main, riser pipe, riser pipeline
	3.	riser - structural member consisting of the vertical part of a stair or step

arise, early bird, get up, human, individual, mortal, person, rise, somebody, someone, soul, stand up, turn out, uprise