What is the meaning of Faulen?

to rot (become decomposed by microorganisms)

inflection of faul:

1. strong genitive masculine/neuter singular
2. weak/mixed genitive/dative all-gender singular
3. strong/weak/mixed accusative masculine singular
4. strong dative plural
5. weak/mixed all-case plural

strong genitive masculine/neuter singular

weak/mixed genitive/dative all-gender singular

strong/weak/mixed accusative masculine singular

strong dative plural

weak/mixed all-case plural

to rot, to decay

to fall

Source: wiktionary.org