This is the 1702nd most frequent German word.
e
The German word "e" by itself does not have a specific meaning; it is typically part of another word or abbreviation.
The word 'e' in 'arbeitete' is part of the conjugated verb form indicating past tense for 'arbeiten' (to work).
Er arbeitete immer sehr gewissenhaft.
He always worked very conscientiously.
The word 'e' in 'eine' is part of the accusative form of the feminine article referring to 'Banane' (banana).
Meine Schwester isst täglich eine Banane.
My sister eats a banana daily.
Here the word 'e' in 'eine' is part of the article used to specify 'Geschichte' (story).