The most common and most likely answer to this crossword clue is the 8 letter word RAILHEAD
I've seen this crossword clue in Financial Times
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More clues leading to the result RAILHEAD
Buddy explains!
The straight part
We know that "train terminus" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case train terminus = railhead.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does RAILHEAD mean?
RAILHEAD noun- A point on a railway system where goods are loaded, unloaded or transferred to other transport.
- The furthest point on a railroad/railway under construction to which rails have been laid.
- The top surface (head) of a rail.
- An area of hostile territory at the end of a rail line that, when captured, serves for the continuous movement into position of further troops and material.