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filler cap

British  

noun

  1. a device sealing the filling pipe to the petrol tank in a motor vehicle

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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He located the filler cap under the front bunk cushions when he took all the cushions out and put them topside to dry in the sun.

From "The Voyage Of The Frog" by Gary Paulsen

As the fuel is sucked from the gasoline tank a small vent must be made in the tank filler cap so that the pressure in the main tank will always be that of the atmosphere.

From Aviation Engines Design?Construction?Operation and Repair by Pag?, Victor Wilfred

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