Where does “requin” come from?

requin (English) comes from French requin, from Old French reschin, from Old French rekigner — to make an ugly face.

requin (English): The great white shark

Definitions

Step	Language	Word	Meaning
1	French	requin	shark
2	Old French	reschin	—
3	Old French	rekigner	to make an ugly face

requin — Etymology, Origin & Word History | Etymology Explorer