Frictionless rails Synonyms

Definitions for Frictionless

(adjective) having or marked by agreement in feeling or action
(adjective) lacking all friction

FR abbreviation

FR is an abbreviation for Frictionless Rails

What does FR stand for?

FR stands for "Frictionless Rails"

Definitions for Rails

(noun) a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll