Student or Learner
This is because the lotus' leaves are covered with tiny needles/thorns, on which dust and dirt fall and are later removed when it rains.
Are tiny needles and thorns interchangeable in the above context? Thanks.
I am puzzled - I didn't think that lotus plants had thorns, or indeed even prickles. They are smooth and glaucous.
If they had something on their surfaces, they would be more likely to be called hairs.