- A menial task, especially in the military.
- A weariness caused by exertion; exhaustion.
- (engineering) A mechanism of material failure involving of crack growth caused by low-stress cyclic loading.
- (intransitive) to lose so much strength or energy that one becomes tired, weary, feeble or exhausted
- (transitive) to tire or make weary by physical or mental exertion
- (intransitive, engineering, of a material specimen) to undergo the process of fatigue; to fail as a result of fatigue.