What is the meaning of Ritten?

A young rat.

a ritten; a young rat

plural of rit

to run back and forth playing

to tear one's clothes while running

inflection of reiten:

1. first/third-person plural preterite
2. first/third-person plural subjunctive II

first/third-person plural preterite

first/third-person plural subjunctive II

definite singular of ritt

Source: wiktionary.org