Where does “Nijkerk” come from?

Nijkerk (Dutch) comes from Dutch kerk, from Dutch mis, from Middle Dutch mis — urine.

Ancestry of “Nijkerk”, step by step

Step	Language	Word	Meaning
1	Dutch	kerk	church, house of Christian worship; church,...
2	Dutch	mis	mass; wrong; missed, not a hit
3	Middle Dutch	mis	urine