CASTLE

Fortress (6)

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

• Quick crossword No 15,678 — 2020-08-05 23:00:14
  1A: Fortified building (6)
• Quick crossword No 15,442 — 2019-11-04 00:00:08
  8D: Fortress (6)