। ॥
In plain words
O Kāmākṣī, where the shining lustre of your smile meets the darkness of your hair, which rivals black collyrium, it takes on a look of its own, like the river of the gods mingled with the waves of the Yamunā, like a wave of moonlight mixed with great dark clouds.
Word for word
Mingled as if the gods'-world-river with Yamunā wave-masses, mixed as if the moon-light-wave with dark great clouds, Kāmākṣī, shining your smile-lustre, with the black-collyrium-rivalling darkness of hair-lustres in contact, a certain state attains.