lallo — Lewis & Short
lallo, āvi, ātum, 1,
I v. n., to sing lalla or lullaby, to sing as a nurse to a child:
iratus mammae, lallare recusas,will not let yourself be sung to sleep, Pers. 3, 17; Hier. Ep. 14, 3: lallare baba/zein, Gloss. Philox.