verb
Meaning 1
To introduce a problem, dilemma or obstacle, something unexpected or troublesome.
Definition source: English Wiktionary via Wiktextract
Usage: UK, idiomatic
Examples
- Halfway through the production of Macbeth, the director found that the stage was smaller than he had expected. This really threw a spanner in the works.
Meaning relationships
Synonyms: throw a wrench in the works, throw a wrench in the gears, throw a monkey wrench in the works, gum up the works
Antonyms: none provided