TWELVE

AM/PM separator? (6)

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

• Quick crossword No 16,053 — 2021-10-18 23:00:09
  14A: Baker's dozen minus one (6)
• Quick crossword No 15,366 — 2019-08-06 23:00:33
  16D: Three fours (6)
• Quick crossword No 15,341 — 2019-07-08 23:00:38
  25A: AM/PM separator? (6)