flat-bottomed rail

flat-bottomed rail

n
(Railways) railways a rail having a cross section like an inverted T, with the top extremity enlarged slightly to form the head. Also called: flanged rail
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Guided thus, New Zealand's railway machine ensemble came promiscuously to mix British with American elements--as small-capacity four-wheel wagons and Saxby & Farmer signalling gear sat alongside steam locomotives garlanded with external pipework hauling saloon carriages on flat-bottomed rail. But national development also implied industrialisation, however haltingly.