STAIR n. 2 definitions
part of a house, where the servants are. -- Flight of stairs, the stairs which make the whole ascent of a story. -- Pair of stairs, a set or flight of stairs. -- pair, in this phrase, having its old meaning of a set. See Pair, n., 1. -- Run of stars (Arch.), a single set of stairs, or section of a stairway, from o…
STIMULUS n. 2 definitions
That which excites or produces a temporary increase of vital action, either in the whole organism or in any of its parts; especially (Physiol.), any substance or agent capable of evoking the activity of a nerve or irritable muscle, or capable of producing an impression upon a sensory organ or more particularly upon its…