(1):
(n.) The deviation of a shot or ball from its true course.
(2):
(n.) A deviation of the rays of light toward the surface of an opaque body; inflection; diffraction.
(3):
(n.) The bending which a beam or girder undergoes from its own weight or by reason of a load.
(4):
(n.) The act of turning aside, or state of being turned aside; a turning from a right line or proper course; a bending, esp. downward; deviation.