air horn
English
Noun
air horn (plural air horns)
- Alternative form of airhorn
- 1962 March, Brian Haresnape, “Design in 1961—a Retrospect”, in Modern Railways, page 191:
- At a later date in production, the Western Region requested that the two-tone air horns should be placed on the cab roof instead of behind the buffer beam, in order to increase audibility.
References
- “air horn”, in Lexico, Dictionary.com; Oxford University Press, 2019–present.