The couplet describes something, likely a 'Chundadi' (scarf), as being dipped in a basin of lightning and a cascade of rainbow. This implies it is incredibly vibrant, dazzling, and colorful.

This couplet, from the poem "Chunari," paints a vivid picture of a truly magnificent chunari, a traditional Indian scarf. The poet imagines it to be so stunning that it seems to have been first dipped in a pool of lightning, giving it an electrifying glow, and then bathed in the vibrant colors of a rainbow's waterfall. It's a beautiful way to describe something incredibly radiant, colorful, and almost magically beautiful, hinting at its dazzling brilliance and diverse hues. The imagery evokes a sense of wonder and extraordinary charm, making the chunari sound ethereal and breathtaking.