Where does “rekin” come from?

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

rekin (Polish): shark

Definitions

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

rekin — Etymology, Origin & Word History | Etymology Explorer