spanner

noun
  1. 1

    A hand tool for adjusting nuts and bolts; a wrench.

    โ€œPass me that spanner, Jake; there's just one more nut to screw in.โ€

  2. 2

    One who, or that which, spans.

  3. 3

    A hand tool shaped like a small crank handle, for winding the spring of a wheel lock on a musket.

  4. 4

    A device in early steam engines for moving the valves for the alternate admission and shutting off of the steam.

  5. 5

    A problem, dilemma or obstacle; something unexpected or troublesome (in the phrase spanner in the works)

  6. 6

    (mildly) A stupid or unintelligent person; one prone to making mistakes, especially in language.

Synonyms

Source: https://en.wiktionary.org/wiki/spanner