However, "kaththarikkai" in Tamil refers to eggplant, not kathal. There is no specific word for kathal (jackfruit) in Tamil.
You can use the Hindi word "ஜாக்ப்ரூட்" (pronounced "jaakproot") or "ஜாக்பழம்" (pronounced "jaakpazham") to refer to kathal in Tamil.