double-headed rail

1 definition found

double-headed rail - Collaborative International Dictionary of English v.0.48 :

  Double-headed \Dou"ble-head"ed\, a.
     Having two heads; bicipital.
     [1913 Webster]
  
     Double-headed rail (Railroad), a rail whose flanges are
        duplicates, so that when one is worn the other may be
        turned uppermost.
        [1913 Webster]