Where does “cynk” come from?

cynk (Middle English) comes from Middle French cinq, from Old French cinc, from Vulgar Latin cinque, from Latin quīnque, from Proto-Italic kʷenkʷe, from Proto-Indo-European pénkʷe — five.

Ancestry of “cynk”, step by step

Step	Language	Word	Meaning
1	Middle French	cinq	five
2	Old French	cinc	five
3	Vulgar Latin	cinque	five
4	Latin	quīnque	—
5	Proto-Italic	kʷenkʷe	five
6	Proto-Indo-European	pénkʷe	five

Every word from Proto-Indo-European pénkʷe →

cynk — Etymology, Origin & Word History | Etymology Explorer