The turning post; cursor verti amet fortasse (4)
I believe the answer is:
meta
(Another definition for meta that I've seen is " Prefix meaning behind or beyond something".)
I've seen this clue in The Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.