From Wiktionary, the free dictionary
From frei (“free”).
Freio n (strong, genitive Freios, plural Freios)
- (childish, regional, western Germany) in a game such as tag, an area where a player cannot be caught
- Synonym: (northern Germany) Klippo
Äh, das gilt nicht! Ich bin im Freio.- (please add an English translation of this usage example)