diaphone
noun
dia·phone ˈdī-ə-ˌfōn 
: a fog signal similar to a siren but producing a blast of two tones
Word History
First Known Use
1906, in the meaning defined above
- nonnegligent
- nonnegotiable
- nonner
- nonnest
- nonnetwork
- nonneural
- nonneutrals
- nonnies
- nonnitrogenous
- nonnormative
- nonnotification
- nonnovel
- nonnovelist
- nonnovels
- nonnuclear
- nonnucleated
- nonnumerical
- nonnumericals
- nonnutritious
- nonnutritive
- nonny-nonny
- nonobediences
- nonobjective
- nonobjectivism
- nonobjectivisms