Esche

Mane (Îngilîzî)

Noun

ash (tree)

Name

Eš (a village in the Czech Republic)

Hevwate

Eschenholz

gemeine Esche

gewöhnliche Esche

Fraxinus

hohe Esche

eschen

Eschenbaum

Zarava

Basel-Landschaft (de)

äsche

Basel-Landschaft (de)

esche

Agahiyên ji hêla: Deutsch-Schweizerdeutsches Wörterbuch

Wekî (IPA) tê bilêvkirin

/ˈɛʃə/

Etîmolojî (Îngilîzî)

Ji Middle High German mîras hatiye girtin: esche

Ji Old High German mîras hatiye girtin: asca

In summary

From Middle High German esche f, asch m, from Old High German asca f, asc m, from Proto-West Germanic *ask.
The umlaut can be explained here from the plural of the masculine noun, though it may also be due to the secondary umlaut triggered by following -sch- which is found throughout western dialects of High German (compare Äsche, where this is probably the cause of the umlaut).