Meaning
The fresh, dewy hyacinth, prized for its dark fragrant curls.
How Iqbal uses it
The sumbul, the hyacinth, with its dark clustering blossoms, is the garden's likeness of the beloved's curling tresses; its moist freshness and twisting form supply the ghazal, and Iqbal, with an image of fragrant, ensnaring beauty.
See it in the verse