Chharahara (छरहरा) is a Hindi word, an adjective, which means slim, shaped up, not fat or in bad shape. Chharahari is the feminine word for the same, which can also sound like Chhareri, or Chareri, as you could also spell that.
For dhoop, i.e. sunshine, though, the word is still unique, and this is the first time someone has used it. Interesting usage of the word there by Kausar Munir. Maybe you could compare it with crisp, in a way.
The Translation for entire song can be found HERE.