1. a wrench with a movable jaw that can be adjusted to fit different sizes of nuts and bolts
Usage: also called adjustable wrench

1. to deliberately sabotage or disrupt something; to throw a wrench into plans
Usage: informal; often used in the phrase 'throw a monkeywrench into'

Examples

• He grabbed the monkeywrench from the toolbox to tighten the bolt.
• The unexpected storm threw a monkeywrench into our outdoor wedding plans.
• She used a monkeywrench to adjust the pipe fitting.
• The scandal monkeyrenched the company's merger deal.
• A last-minute injury monkeyrenched the team's championship hopes.
• The mechanic reached for a monkeywrench to loosen the nut.