Oasis is a fertile spot in a desert where water is found, literally a life-saving place for travelers.
Figuratively, oasis can mean any pleasant or peaceful area in the midst of a difficult or unpleasant situation.
The term "oasis" also refers to:
1. A famous British rock band formed in Manchester in 1991
2. A chain of convenience stores in Hong Kong
3. A type of refreshing drink or a brand of bottled water