Definitions from Wiktionary (spanner)

▸ noun:  (Commonwealth, UK, Ireland) A hand tool for adjusting nuts and bolts; a wrench.
▸ noun:  (rare) One who, or that which, spans.
▸ noun:  (graph theory) A (usually sparse) graph whose shortest path distances approximate those in a dense graph or other metric space.
▸ noun:  (weaponry) A hand tool shaped like a small crank handle, for winding the spring of a wheel lock on a musket.
▸ noun:  (obsolete) A device in early steam engines for moving the valves for the alternate admission and shutting off of the steam.
▸ noun:  (UK, Ireland) A problem, dilemma or obstacle; something unexpected or troublesome (in the phrase spanner in the works)
▸ noun:  (UK, Ireland, mildly derogatory) A stupid or unintelligent person; one prone to making mistakes, especially in language.
▸ verb:  To use a spanner; to fix with a spanner
▸ Also see spanner

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