noun the deviation of a shot or ball from its true course.
2. deflection ·noun the bending which a beam or girder undergoes from its own weight or by reason of a load.
3. deflection ·noun a deviation of the rays of light toward the surface of an opaque body; inflection; diffraction.
4. deflection ·noun 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.