Meaning of SPANNER in English

SPANNER

■ noun chiefly Brit. a tool with a shaped opening or jaws for gripping and turning a nut or bolt.

Phrases

a ~ (or N. Amer. monkey wrench ) in the works a person or thing that prevents the successful implementation of a plan.

Origin

C18: from Ger. spannen 'draw tight' + -er 1 .

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.