A railway up the side of a mountain pulled by a moving cable and having counterbalancing ascending and descending cars WordNet 3.0 & Open English WordNet

A funicular is a type of cable railway system that connects points along a railway track laid on a steep slope. Wikipedia

A cable railway is a railway that uses a cable, rope or chain to haul trains. Wikipedia

Cable railway in which a cable moves permanently attached rail cars up and down a slope Wikidata

A railway on which the cars are pulled by a moving cable. OmegaWiki

A particular type of rail transit system which ascends a steep urban or mountain incline, having usually two cars sharing a single track, with the cars linked by a cable and an arrangement of pulleys such that the descending car assists in the hoisting of the ascending car, i.e. the two cars serve as counterweights for each other. Wiktionary

Rail transit system. Wiktionary (translation)

A railway on the side of a mountain, pulled by a moving cable. Wiktionary