Mayassar Meaning

Mayassar (मयस्सर) is an Urdu word meaning available.

'Mayassar karna', hence, is to make something available. And so the line, "use mayassar kar bhi aao, wo jo dabi si aas baaki hai" means go make it available (to yourself), as in, go get it for yourself, that suppressed wish that still remains there.