Warning signal for ships (7)
I believe the answer is:
foghorn
(Other definitions for foghorn that I've seen before include "Warning for ships" , "Ship warner" , "Warning device" , "Ship-warning siren" , "Loud, deep, resounding voice" .)
I believe the answer is:
foghorn
(Other definitions for foghorn that I've seen before include "Warning for ships" , "Ship warner" , "Warning device" , "Ship-warning siren" , "Loud, deep, resounding voice" .)