NINETY

XC (in ancient Rome) (6)

Solution has appeared in 3 crosswords (1 across and 2 down):

• Quick crossword No 16,655 — 2023-09-21 23:00:01
  24A: Minutes for a football match (not counting stoppages or extra time) (6)
• Quick crossword No 16,344 — 2022-09-23 23:00:47
  7D: XC (6)
• Quick crossword No 15,606 — 2020-05-13 23:00:53
  7D: XC (in ancient Rome) (6)