Definition of fatigue

• n. - Weariness from bodily labor or mental exertion; lassitude or exhaustion of strength.
• n. - The cause of weariness; labor; toil; as, the fatigues of war.
• n. - The weakening of a metal when subjected to repeated vibrations or strains.
• n. - To weary with labor or any bodily or mental exertion; to harass with toil; to exhaust the strength or endurance of; to tire.