Where does “cinque” come from?

cinque (Old Portuguese) comes from Latin cinque, from Latin quinque, from Proto-Italic kʷenkʷe, from Proto-Indo-European pénkʷe — five.

Ancestry of “cinque”, step by step

cinque traces back through two separate lines of ancestry.

via Latin cinque

StepLanguageWordMeaning
1Latincinquefive
2Latinquinquefive; 5
3Proto-Italickʷenkʷefive
4Proto-Indo-Europeanpénkʷefive

via Vulgar Latin cinque

StepLanguageWordMeaning
1Vulgar Latincinquefive
2Latinquīnquefive; 5
3Frenchquinquetoil lamp, Argand lamp; peeper, eye
Every word from Proto-Indo-European pénkʷe →Every word from Proto-Italic kʷenkʷe →Every word from Latin quinque →