diamond crossover noun1 •superimposed pair of railway crossovers, resembling a letter X, permitting to travel in either direction between a pair of parallel tracks~2005 — Robert Ferreira, "North Springs Branch", in "MARTA North Springs and Doraville Branches", http://world.nycsubway.org/us/atlanta/marta-northbranches.html. "In December, 1999 a new diamond crossover interlocking was placed into service at Medical Center." formsdiamond crossovers
