What is the meaning of Feder?

Aspirate mutation of peder.

to stink, reek

Alternative form of fader

(non-standard since 1938) indefinite plural of far

Alternative form of fæder

father

Bremmer, Rolf H. (2009) An Introduction to Old Frisian: History, Grammar, Reader, Glossary, Amsterdam: John Benjamins Publishing Company, →ISBN, page 29

to stink (have a strong bad smell)

comparative degree of laćho

comparative degree of laćhes

spring

Source: wiktionary.org