To cause someone to feel relaxed or sleepy.

सुलाना

English Usage: He was lulling the baby to sleep with a soft song.

Hindi Usage: वह बच्चे को एक नरम गीत से सुला रहा था।

The act of soothing or calming someone, often to sleep.

शांति देना

English Usage: The lulling sound of the waves made her fall asleep.

Hindi Usage: लहरों की शांति देने वाली आवाज़ ने उसे सोने पर मजबूर कर दिया।