rail

/ɹeɪl/

A horizontal bar extending between supports and used for support or as a barrier; a railing.

The metal bar that makes the track for a railroad.

A railroad; a railway, as a means of transportation.

We travelled to the seaside by rail.

A horizontal piece of wood that serves to separate sections of a door or window.

One of the lengthwise edges of a surfboard.

A vertical section on one side of a web page.

We're experimenting with ads in the right-hand rail.

A large line (portion or serving of a powdery illegal drug).