Definition of "haywire"

haywire

/ˈheɪ.waɪ.ə(ɹ)/

noun
plural haywires
1. Wire used to bind bales of hay.
  Quotations
  MOWERS AND HAY RAKES, HAY PRESSES, HAY TIES AND HAY WIRE.
  1886 May 6, W. A. Huffman Implement Company, “Superior Lawn Mowers!”, in Fort Worth Daily Gazette‎, page 7
adjective
comparative more haywire, superlative most haywire
1. Roughly-made, unsophisticated, decrepit (from the use of haywire for temporary repairs).
2. Behaviorally erratic or uncontrollable, especially of a machine or mechanical process; usually used with the verb "go".
  Quotations
  The engineer who makes of his calling a burden, who sees nothing but the wrong, or imposition as he may term it, who fancies perhaps that the whole world has conspired against him, who commences to damn things as soon as he appears upon the scene of his labors, and continues to damn everything, including his train crew, the engine, the officers, and almost everything, animate and inanimate, while making the round trip, is working out his own destiny, and it is but charitable to say of such a man that he is not well, his digestion has gone " hay wire " as it were.
  1905 May, J. W. Reading, “Engine Failures”, in Brotherhood of Locomotive Engineers Monthly Journal‎, volume XXXIX, number 5, page 423
  "I got phone orders at Tuolumne Meadows to pack up and come over Sunrise Trail. Started at sunrise. Everything haywire, including cranky pack horse which kept getting off trail. Phoned in at Vernal Falls station. Ordered to hurry down, help catch two auto thieves which broke jail just after breakfast. Assigned to guard Coulterville Road.
  1928, Horace Marden Albright, Frank J. Taylor, chapter 1, in "Oh, Ranger!": A Book about the National Parks‎, page 1
  Temperatures soared—the seas warmed by as much as eighteen degrees—and the chemistry of the oceans went haywire, as if in an out-of-control aquarium.
  2014, Elizabeth Kolbert, The Sixth Extinction: An Unnatural History, Picador, page 103