noun span·ner \ˈspa-nər\

Definition of spanner

  1. 1 chiefly British :  wrench

  2. 2 :  a wrench that has a hole, projection, or hook at one or both ends of the head for engaging with a corresponding device on the object that is to be turned

Illustration of spanner

Origin and Etymology of spanner

German, instrument for winding springs, from spannen to stretch; akin to Middle Dutch spannen to stretch — more at span

First Known Use: circa 1790

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to search out and expose misconduct

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