·noun A feed head. ·see under Feed, ·noun.
II. Riser ·noun One who rises; as, an early riser.
III. Riser ·noun A shaft excavated from below upward.
IV. Riser ·noun The upright piece of a step, from tread to tread.
V. Riser ·noun Any small upright face, as of a seat, platform, veranda, or the like.