Rāis'er, n.
n. 1. One who, or that which, raises; a builder; a levier; a collector. 2. (Arch.) One of the upright boards on the front of the steps of a flight of stairs; a riser.
n. 1. One who, or that which, raises; a builder; a levier; a collector. 2. (Arch.) One of the upright boards on the front of the steps of a flight of stairs; a riser.