Where does “Silhouette” come from?

Silhouette (French) comes from Basque Ziloeta, from Basque zulo, from Proto-Basque *zuLo.

Ancestry of “Silhouette”, step by step

Step	Language	Word	Meaning
1	Basque	Ziloeta	—
2	Basque	zulo	hole; pit; den, hiding place
3	Proto-Basque	*zuLo	—

Silhouette — Etymology, Origin & Word History | Etymology Explorer