The most common and most likely answer to this crossword clue is the 9 letter word TURNSTILE
I've seen this crossword clue in The Daily Telegraph
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More clues leading to the result TURNSTILE
- Act with elegance on radio, one admits
- Revolver found at entrance to ground
- Goes with baked clay slab for revolutionary entrance feature
- Revolver may be used when approaching big game
- Rotating mechanism for fans
- Means of entry in ground lest I should emerge?
- ‘Vessels’ in title needing changing — it’s a pivotal passage
- Point of access — until rest shifted
- Change design reportedly for entrance to football stadium?
- Fans’ rotating mechanism?
Buddy explains!

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 TURNSTILE mean?
TURNSTILE noun- A rotating mechanical device that controls and counts passage between public areas, especially one that only allows passage after a charge has been paid.
- A similar device in a footpath to allow people through one at a time while preventing the passage of cattle.
- The \vdash symbol used to represent logical entailment (deducibility relation), especially of the syntactic type; i.e., syntactic consequence. (Such symbol can be read as "prove(s)" or "give(s)". )