n. The act of erecting, or raising upright; the act of constructing, as a building or a wall, or of fitting together the parts of, as a machine; the act of founding or establishing, as a commonwealth or an office; also, the act of rousing to excitement or courage.n. The state of being erected, lifted up, built, established, or founded; exaltation of feelings or purposes.n. State of being stretched to stiffness; tension.n. Anything erected; a building of any kind.n. The state of a body part which, from having been soft, has become hard and swollen by the accumulation of blood in the erectile tissue; -- used especially of the penis.