Is “Lullaby” a Scrabble word?
Yes
LULLABY
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Lullaby
/ˈlʌləbaɪ/
noun
1.A cradlesong, a soothing song to calm children or lull them to sleep.
Synonyms: berceuse, cradle song
verb
1.To sing a lullaby to.