1. Brother-in-law: This is the most common translation, referring to the brother of your spouse.
2. Brother-in-law (by marriage): This translation is more specific, emphasizing the relationship as one formed through marriage rather than blood.
3. Sister-in-law: While less common, "cunado" can also be used to refer to the sister of your spouse in some Spanish-speaking regions. This usage is less frequent than the brother-in-law meaning.
To ensure the most accurate translation, it's important to consider the context of the word "cunado" in the original sentence.