Where does “marmer” come from?

marmer (Middle Dutch) comes from Latin marmor, from Ancient Greek μάρμαρος, from Indo-European *mer-.

Ancestry of “marmer”, step by step

Step	Language	Word	Meaning
1	Latin	marmor	a block or piece of marble; pulverized marble,...
2	Ancient Greek	μάρμαρος	crystalline rock; marble
3	Indo-European	*mer-	—