1. Wine that has lost its freshness, flavor, or quality due to age, improper storage, or oxidation
The restaurant served stale wine that tasted like vinegar.
O restaurante serviu vinho passado que tinha gosto de vinagre.
2. Wine that has been open for an extended period and has begun to deteriorate
After three weeks, the opened bottle became stale wine.
Depois de três semanas, a garrafa aberta se tornou vinho passado.