Eller has 2 different meanings across 1 category:
Proper Noun
Noun
1
Obsolete form of alder.
"The old botanical text lists several synonyms for the tree, including the obsolete form aller alongside common names like alder and gray-leaved oak."
Proper Noun
1
A surname.
"The new neighbor, Mr. Eller, waved hello from his porch while watering his flowers."