Definition of "fatigue"

My husband stayed for some days with the magistrate at Cardwell, recruiting his health and recovering from his fatigues, for the passage between Cape York and Cardwell had proved the most tedious and anxious part of the voyage.

1887, Harriet W. Daly, Digging, Squatting, and Pioneering Life in the Northern Territory of South Australia, page 181

Alan Pardew finished by far the most frustrated man at the Emirates, blaming fatigue for the fact that Arsenal were able to kill his team off in the dying minutes.

2012 December 29, Paul Doyle, “Arsenal's Theo Walcott hits hat-trick in thrilling victory over Newcastle”, in The Guardian‎

Moreover, the habits of business are the most enduring of any; and Lord Norbourne's most positive enjoyment was in what are called the fatigues of office.

1837, L[etitia] E[lizabeth] L[andon], “Opinions”, in Ethel Churchill: Or, The Two Brides. […], volume I, London: Henry Colburn, […], page 112

Mechanical failures due to fatigue have been the subject of engineering efforts for more than 150 years.

2013, N. Dowling, Mechanical Behaviour of Materials, page 399

He was slouched in the chair behind the duty officer’s desk, cigarette dangling from his lips, hands thrust deep into his fatigue pockets, making a display of his disrespect. The acting clerk, cowering behind his own desk, was either afraid to insist he assume a more military posture, or else didn’t care.

1975, John Crowther, Firebase, New York, N.Y.: St. Martin’s Press, page 107

He reluctantly took the map from his camouflage fatigue pocket.

1998, William T. Craig, Team Sergeant: A Special Forces NCO at Lang Vei and Beyond, New York, N.Y.: Ivy Books, page 27

Chino took a laminated map out of one of his fatigue pockets and gave it to Harper.

2013, Gavin G. Smith, Crysis: Escalation, London: Gollancz, page 186

Spencer came with all the soft-skill attributes of a desk officer. Double chin, bulging belly testing the tensile strength of the lower two buttons of his fatigue top, and wired-rimmed glasses that sat atop a pointed nose with mismatched nostrils.

2014, Dalton Fury, Full Assault Mode, New York, N.Y.: St. Martin’s Press, page 139

The handsome, silver-haired proprietor was absorbed in fatiguing a salad for a family party.

1927, Dorothy L. Sayers, chapter 1, in Unnatural Death