gant·let 1 
(gôntlĭt, gänt-)
(gôntlĭt, gänt-)n.
A section of double railroad tracks formed by the temporary convergence of two otherwise parallel tracks in such a way that each set remains independent while traversing the same ground, affording passage at a narrow place without need of switching.
tr.v. gant·let·ed, gant·let·ing, gant·lets
To converge (railroad tracks) to form a gantlet.
[Variant of GAUNTLET2.]
gantlet1