Thesaurus

(n) : Wire used to bind bales of hay

(adj) : roughly-made, unsophisticated, decrepit (from the use of haywire for temporary repairs; Originated because of frayed wires sitting near hay in a hot barn, which caused an explosion. The barn ceased to exist, and it was referred to as having gone "haywire."); behaving erratically or in an uncontrollable manner, especially of a machine or mechanical process