What Do You Mean By Rail?

1 : a bar extending from one support to another and serving as a guard or barrier. 2 : a bar of steel forming a track for wheeled vehicles. 3 : railroad sense 1 They travel across Canada by rail.
\ ˈrāl \

1a : a bar extending from one post or support to another and serving as a guard or barrier

b : a structural member or support

b : a light structure serving as a guard at the outer edge of a ship's deck

c : a fence bounding a racetrack

3a : a bar of rolled steel forming a track for wheeled vehicles

: any of numerous wading birds (family Rallidae, the rail family) that are of small or medium size and have short rounded wings, a short tail, and usually very long toes which enable them to run on the soft mud of marshes