deflection (Noun) — The property of being bent or deflected.
deflection (Noun) — The amount by which a propagating wave is bent.
deflection (Noun) — The movement of the pointer or pen of a measuring instrument from its zero position.
deflection (Noun) — A turning aside (of your course, attention or concern). ex. "a deflection from his goal"
deflection (Noun) — A twist or aberration; especially a perverse or abnormal way of judging or acting.