From Longman Dictionary of Contemporary Englishcrowbarcrow‧bar /ˈkrəʊbɑː $ ˈkroʊbɑːr/ noun [countable] 
TZa heavy iron bar used to lift something or force it open
TZa heavy iron bar used to lift something or force it openExamples from the Corpus
crowbar• She was rowing, and he had a crowbar.• Besides the unlimited license to overcharge, the prosecutor has a crowbar called time to hold over your head.• Even if your name is Razor you have a chunk of metal the size of a crowbar pierced through your left side.• It looked as if it would take a crowbar to open his mouth.• These may be levered off if rusty 4 Try to avoid breaking glass when using a crowbar on the fixed sashes.• After a moment Fernand emerged, an expression of sullen resentment on his face and a heavy crowbar in his hand.• You will also need a strong crowbar to help you lift and overturn large boulders.• A central angled cut will make levering out easier 7 Use the crowbar to prise the frame from the wall.Origin crowbar (1700-1800) Because its flattened split end looks like a crow's foot 