Where does “speekselklier” come from?

speekselklier (Dutch) comes from Dutch speeksel, from Middle Dutch speecsel, from Middle Dutch spekel.

speekselklier (Dutch): salivary gland

Definitions

Step	Language	Word	Meaning
1	Dutch	speeksel	saliva, spit
2	Middle Dutch	speecsel	—
3	Middle Dutch	spekel	—

speekselklier — Etymology, Origin & Word History | Etymology Explorer