sing-in ( synonym found)
Definition of sing-in:

°The act of using the voice to produce musical sounds; vocalizing.
°Disclosing information, or giving evidence about another.
°(music) Smooth and flowing.
°(of a kettle etc.) Producing a whistling sound due to the escape of steam.
Definition of sing-in:

°The act of using the voice to produce musical sounds; vocalizing.
°Disclosing information, or giving evidence about another.
°(music) Smooth and flowing.
°(of a kettle etc.) Producing a whistling sound due to the escape of steam.
Back to Top