Riser

Riser

(1): ( n.) A feed head. See under Feed, n.

(2): ( n.) A shaft excavated from below upward.

(3): ( n.) The upright piece of a step, from tread to tread.

(4): ( n.) One who rises; as, an early riser.

(5): ( n.) Any small upright face, as of a seat, platform, veranda, or the like.