Where does “tablå” come from?

tablå (Swedish) comes from French tableau, from Old French tablel, from Latin tabula, from Proto-Italic *taðlā — board.

Ancestry of “tablå”, step by step

Step	Language	Word	Meaning
1	French	tableau	painting; picture; writing board
2	Old French	tablel	a surface which is used primarily for painting
3	Latin	tabula	tablet, sometimes a tablet covered with wax for...
4	Proto-Italic	*taðlā	board