Definition of ringback in English:

ringback

Syllabification: ring·back
Pronunciation: /ˈriNGˌbak
 
/

noun

A sound made by a cellular phone that is heard by a person who is calling that phone while waiting for the call to be connected.
More example sentences
  • It looks like almost every caller tried a few times, and hung up in confusion when they first heard the ringback tone.
  • Now comes ringbacks, which allow you to change the way your phone sounds in the ear of the person calling you.

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