Questions & Answers about A faiança tem um vidrado branco.
Yes. A is the feminine singular definite article, so it means the.
In this sentence, A faiança can mean the earthenware/faience in a general sense, like talking about that material as a type. Portuguese often uses the definite article in places where English might also use the, or sometimes no article at all depending on context.
So:
- a = the for a feminine singular noun
- faiança is feminine singular, so a matches it