definitions

flat-bottomed rail

noun

railways a rail having a cross section like an inverted T, with the top extremity enlarged slightly to form the headAlso called: flanged rail

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Nearby words

flat-bed lorry, flat-bed plotter, flat-bed press, flat-bed scanner, flat-bottomed, flat-bottomed rail, flat-coated retriever, flat-earther, flat-felled seam, flat-file, flat-footed
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