Where does “dam” come from?

dam (Old Dutch) comes from Proto-West Germanic *damm, from Proto-Germanic dammaz — dam.

Ancestry of “dam”, step by step

StepLanguageWordMeaning
1Proto-West Germanic*dammdam
2Proto-Germanicdammazdam

Words derived from “dam”

Every word from Proto-Germanic dammaz →Every word from Proto-West Germanic *damm →
dam — Etymology, Origin & Word History | Etymology Explorer