ber·​ceuse | \ ber-ˈsœz  -ˈsüz  \
plural berceuses\ ber-​ˈsœz  ; -​ˈsüz -​ˈsü-​zəz \

Definition of berceuse

1a musical composition usually in ⁶/₈ time that resembles a lullaby
2lullaby