A delicacy is a food that's considered special and enjoyable, but maybe not something you can have all the time. You might think of expensive or exotic foods as delicacies.
When people talk about food being a delicacy, they often mean it's rare or hard to find. For example, if someone has caviar at a party, that's a delicacy because it's super expensive and only some rich people have it in their homes. But delicacy can also just mean something tastes really good and is fun to eat. Like if you try some new type of cheese at a restaurant, that might be considered a delicacy too – not necessarily hard to get, but just something special.
The quality of being delicate.
