The most common and most likely answer to this crossword clue is the 9 letter word FUNICULAR
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The cryptic/wordplay part
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What does FUNICULAR mean?
FUNICULAR noun- 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.
- Of, pertaining to, resembling, or powered by a rope or cable
- Of or pertaining to the umbilical cord.
- Having a fleshy covering of the seed formed from the funiculus, the attachment point of the seed.