A tool used for turning nuts and bolts.

A metaphorical term for something that causes a problem or complication.

कुछ ऐसा जो समस्या या जटिलता पैदा करता है।

English Usage: The new regulations were a real spanner in the works for the project.

Hindi Usage: नए नियम परियोजना के लिए वास्तव में एक समस्या बन गए।