FOGHORN

Loud warning to sailors (7)

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

• Quick crossword No 16,637 — 2023-08-31 23:00:18
  3D: Warning signal for ships (7)
• Quick crossword No 16,038 — 2021-09-30 23:00:14
  21A: Loud warning to sailors (7)