waningsound
nounUK /ˈweɪnɪŋ saʊnd/
US /ˈweɪnɪŋ saʊnd/
A sound that is getting quieter and quieter.
The waningsound of the train faded as it rolled away.
OTHER MEANINGS
2. The last soft notes of a song as it ends.
We sat quietly through the waningsound of the lullaby.
3. A noise that slowly disappears into the distance.
The waningsound of footsteps told us our friend had gone home.
4. A signal or alarm that is slowly turning off.
The waningsound of the siren meant the storm had passed.