I know "cuñado" in Spanish means "brother-in-law"; however, I never heard the term "pricuñado".
If this is a Spanish word then I could "guess" that it might be a hybrid word of "cousin-in-law". Since cousin in Spanish is "primo" then a mixture of "PRImo"+"CUÑADO" = "PRICUÑADO".
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I know "cuñado" in Spanish means "brother-in-law"; however, I never heard the term "pricuñado".
If this is a Spanish word then I could "guess" that it might be a hybrid word of "cousin-in-law". Since cousin in Spanish is "primo" then a mixture of "PRImo"+"CUÑADO" = "PRICUÑADO".