prathama lilaya tanra 'visvambhara' nama
bhakti-rase bharila, dharila bhuta-grama
prathama—first; lilaya—in the pastimes; tanra—of Him; visvambhara nama—the name Visvambhara; bhakti-rase—with the mellow of devotional service; bharila—He filled; dharila—saved; bhuta-grama—all the living entities.
In His early pastimes He is known as Visvambhara because He floods the world with the nectar of devotion and thus saves the living beings.
Link to this page: https://prabhupadabooks.com/cc/adi/3/32