تعريف railway sleeper في الإنجليزية الإنجليزية القاموس.
One of the cross braces that support the rails on a railway track; (synonym) tie, crosstie, sleeper
A railroad tie/railway tie/crosstie (North America), or railway sleeper (Europe & Australia) is a rectangular support for the rails in railroad tracks. Generally laid perpendicular to the rails, ties transfer loads to the track ballast and subgrade, hold the rails upright, and keep them spaced to the correct gauge