Where does “*aspa” come from?

*aspa (Old Dutch) comes from Proto-West Germanic *aspu, from Proto-Germanic aspō, from Proto-Indo-European Hosp- — aspen, poplar.

Ancestry of “*aspa”, step by step

StepLanguageWordMeaning
1Proto-West Germanic*aspuaspen
2Proto-Germanicaspōaspen
3Proto-Indo-EuropeanHosp-aspen, poplar

Words derived from “*aspa”

Every word from Proto-Indo-European Hosp- →Every word from Proto-Germanic aspō →Every word from Proto-West Germanic *aspu →