The most common and most likely answer to this crossword clue is the 8 letter word VICTORIA
I've seen this crossword clue in The Guardian
V
I
C
T
O
R
I
A
More clues leading to the result VICTORIA
- English queen / falls in Africa
- Duke of Wellington at Waterloo, one ahead of a sovereign
- One coming out on top — one with a carriage
- Woman falls in station
- State queen falls in station
- Queen‘s state carriage
- Monarch in charge on hill breaking through
- Itinerant vicar to go around island in carriage
- Six American spies surrounding rocky hill station
- Mostly win one with a queen
Buddy explains!

The straight part
We know that "Queen/state/carriage" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case queen/state/carriage = victoria.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 VICTORIA mean?
VICTORIA noun- A kind of low four-wheeled pleasure carriage, with a calash top, designed for two persons and the driver who occupies a high seat in front.