Here I'm talking about the main one line that is there in the Dream Girl version of the song.

In short, the meaning is: The clouds have parted, and water is leaking drop by drop.

Going in more detail (of the same line), the line is:

ढगाला लागली कळ पाणी थेंब थेंब गळ
OR
Dhagala laagli kaaLa, paaNi themb themb gaLa

It's a little easier to understand if you can read Devanagari (Hindi script). In case you're unfamiliar with the letter ळ, it's something between ल and ड़, sort of. You can listen to it carefully in the song.

Here ढग (Dhaga) is cloud, and the first part means "it's started coming out of the cloud" or 'the clouds have parted'.

In the second part, पाणी (paaNi) is of course water, and themb themb is drop by drop. Thus the line means, water is leaking drop by drop.

So the entire line goes, The clouds have parted, and water is leaking drop by drop. The line apparently is quite double meaning, if you know what I mean.