diaphone
/ˈdʌɪəfəʊn
/noun
A low-pitched fog signal operated by compressed air, characterized by the ‘grunt’ which ends each note.In later years the oscillator was replaced by a duplicate diaphone to be used in the event of breakdown....
- Use of the diaphones was limited after some lawsuits were filed against the Borough by nearby residents.
- In 1991 the diaphone fog signal was changed to an electric horn retaining the same character.
Origin
Early 20th century: from Greek dia 'through' + phōnē 'sound'.
- line of force
- line of latitude
- line of longitude
- line of march
- line of scrimmage
- line of sight
- line of thought
- line of vision
- line one's pocket
- line one's stomach
- line out
- line printer
- liner
- -liner
- liner note
- line score
- lineside
- linesman
- line someone/thing up
- line something out
- line spacing
- line spectrum
- line squall
- line switch
- line-up