तिहरा
Every episode has its double and treble meaning.

उच्चतम स्वर का
A treble voice

लगातार तीसरी विजय
The victory completed a treble for the horse's owner.

उच्च स्वर
To turn up the treble on the stereo / the piping treble of childish voices

तिगुना करना  =  do
He trebled his earnings in two years.

तिगुना हो जाना
Cases of food poisoning have trebled in the last two years.