1. A quiet song intended to lull a child to sleep
   "The mother sang a gentle lullaby to her baby";
   - cradlesong, berceuse
    
2. The act of singing a quiet song to lull a child to sleep
   "The mother's gentle lullaby soothed the baby to sleep";
   - cradlesong

Derived forms: lullabies

Type of: song, strain, vocal

Encyclopedia: Lullaby, and Good Night