1. One who rises; as, an early riser.
2. (Arch.) (a) The upright piece of a step, from tread to tread. Hence: (b) Any small upright face, as of a seat, platform, veranda, or the like.
3. (Mining)
Defn: A shaft excavated from below upward.
4. (Founding)
Defn: A feed head. See under Feed, n.
RISH
Rish, n.
Defn: A rush (the plant). [Obs.] Chaucer.
RISIBILITY
Ris`i*bil"i*ty, n. Etym: [CF. F. risibilité.]
Defn: The quality of being risible; as, risibility is peculiar to the
human species.
A strong and obvious disposition to risibility. Sir W. Scott.