What is "monkey-wrench"

Usage examples of "monkey-wrench".

The latter was also busy fomenting treasons and plots among his coreligionists in Nostor and Sask by radio, and the three Terran members usually found themselves called away to show some Freyan mechanic how to use a monkey-wrench, or to land a spy outside one of the enemy capitals, or jockey a landing-craft to and from the ship.

There were ecoteurs still out there monkey-wrenching projects, but with the legal limits on terraform-ing, most Reds had rejoined society somehow.

There were ecoteurs still out there monkey-wrenching projects, but with the legal limits on terraforming, most Reds had rejoined society somehow.