Just a single time (4)

I believe the answer is:

once

'just a single time' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for once that I've seen before include "Formerly; as soon as" , "Singly" , "Cone (anag.)" , "At some time past" , "At some former time" .)

I've seen this clue in The Mirror, the Newsday, the Universal, the Newsday.com, the Wall Street Journal and the USA Today.

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.