Noun
adjustable wrench that has one fixed and one adjustable jaw
Source: WordNetmonkey-wrench
A determined soul will do more with a rusty monkey wrench than a loafer will accomplish with all the tools in a machine shop. Robert Hughes
Putting a monkey wrench in machinery is often the only way to force somebody to repair, replace, or redesign the machinery. Especially legal or social machinery. Larry Niven
In January of 1995, my family and I moved to Seattle. Pearl Jam did the first of their live radio broadcasts, Monkey Wrench Radio, along with many other Seattle musicians. Jack Irons
For the second time in a week, COVID-19 regulations have thrown a monkey wrench into Halloween activities at Saunders Farm. Source: Internet
Hopefully, no last minute COVID-19 testing or unexpected surges will throw a monkey wrench into the system. Source: Internet
"The announcement has lobbed a monkey wrench into an already uncertain and volatile political environment, which not only includes the U.S. election campaign and upcoming debates, but also ongoing EU-U. Source: Internet