Where does “তক্তা” come from?

তক্তা (Assamese) comes from Classical Persian تخته, from Middle Persian tʾhtk', from Middle Persian tʾht', from Proto-Iranian *táxtah, from Proto-Indo-Iranian *táktas, from Proto-Indo-European (s)teg- — to cover; pole, stick, beam.

তক্তা (Assamese): plank