movable-point crossing

movable-point crossing

[′mü·və·bəl ¦pȯint ′krȯs·iŋ]
(civil engineering)
A small-angle rail crossing with two center frogs, each of which consists essentially of a knuckle rail and two opposed movable center points.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.