Monkey wrench

Did you ever stop to think whether or not you knew how a monkey wrench should be used?

With a monkey wrench on the hexagonal part of the stuffing box unscrew the stuffing box from the body of the faucet.

There were two monkey wrenches for that, sitting in a bucket. Lisa held one wrench and I applied the other and in a few minutes we had removed the motor head and set it on the ground.

Professor Miller's careful research has thrown a monkey-wrench into the Einstein wheel, although it has far from discouraged the enthusiastic exponents of Einsteinism.

Meanwhile the killer, either knowing for sure or by instinct that the police have incorrectly profiled him, throws monkey wrenches into the task force investigation by changing his modus operandi (MO) for no other reason than to trick the police.

It has been suggested that myocilin missense mutations that cause severe disease are monkey wrenches, causing disease through actively causing a problem rather than through a lack of the gene product or function.

Therefore, even if the author is a celebrity, something may throw a monkey wrench in an event's success. It is here where I must mention the monkey wrench that dramatically hurt events I scheduled during the period of 1996–2001.

Girard had programmed some electronic "monkey wrenches" into the control panel that with the stroke of a key, would render the device inoperable.

I think it’s possible that [US Vice President J.D.] Vance didn’t intend to monkey wrench [the meeting with US President Donald Trump and Ukrainian President Volodymyr Zelensky].