Hi Aji - if you meam how to make the sound, try this:

jjjjon~ruh

- where the first sound is the soft J that is nearly like the 'shhhhh' sound in wash, with the addition of 'voice' by vibrating your vocal chords instead of just breathing out.

If you mean its typical meaning, I suggest it is an artistic style or category - the word comes from the Latin word genus, suggesting 'birth or origin'.

I hope that helps a bit.