ठट्ठा मतलब [सं-पु.] - 1. बहुत ज़ोर की हँसी; ठहाका 2. अट्टहास 3. उपहास; मज़ाक। Also see Thattha in English.
Here is meaning of Thattha in hindi. Get definition and hindi meaning of Thattha. What is Hindi definition and meaning of Thattha ? (hindi matlab - arth kya hai?).