Where does “Mesteceni” come from?

Mesteceni (Romanian) comes from Romanian mesteacăn, from Latin mastichinus, from Ancient Greek μαστίχινος, from Ancient Greek μαστίχη, from Ancient Greek μαστιχάω, from Ancient Greek μάσταξ — mouth, jaws, that with which one chews; mouthful,...

Ancestry of “Mesteceni”, step by step

Step	Language	Word	Meaning
1	Romanian	mesteacăn	birch tree
2	Latin	mastichinus	of or belonging to the mastic tree
3	Ancient Greek	μαστίχινος	prepared with mastic
4	Ancient Greek	μαστίχη	mastic
5	Ancient Greek	μαστιχάω	I grind the teeth
6	Ancient Greek	μάσταξ	mouth, jaws, that with which one chews; mouthful,...

Every word from Ancient Greek μάσταξ →Every word from Ancient Greek μαστιχάω →Every word from Ancient Greek μαστίχη →