crescent spanner vs spanner

crescent spanner

noun
  • An adjustable hand tool for tightening and loosening nuts and bolts. 

spanner

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

  • One who, or that which, spans. 

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

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

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

verb
  • To use a spanner; to fix with a spanner 

How often have the words crescent spanner and spanner occurred in a corpus of books? (source: Google Ngram Viewer )