Definition of "Fatigue" :

noun: labor of a nonmilitary kind done by soldiers (cleaning or digging or draining or so on)

"The soldiers were put on fatigue to teach them a lesson."

noun: (always used with a modifier) boredom resulting from overexposure to something

"He was suffering from museum fatigue."

noun: temporary loss of strength and energy resulting from hard physical or mental work

"He was hospitalized for extreme fatigue."

noun: used of materials (especially metals) in a weakened state caused by long stress

"Metal fatigue."

verb: exhaust or get tired through overuse or great strain or stress

verb: lose interest or become bored with something or somebody