lullaby

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a quiet song intended to lull a child to sleep (Freq. 1)
• Syn:
cradlesong, berceuse
• Hypernyms:
song, vocal
2. the act of singing a quiet song to lull a child to sleep
• Syn:
cradlesong
• Hypernyms:
song, strain