span‧ner /ˈspænə $ -ər/ noun [countable] British English
[Date: 1600-1700; Language: German]

1. a metal tool that fits over a nut, used for turning the nut to make it tight or to undo it Synonym : wrench American English

2. put/throw a spanner in the works informal to unexpectedly do something that prevents a plan or process from succeeding

[TahlilGaran] Dictionary of Contemporary English ▲