In slang means " female " at the beginning of the insulting, derogatory or demeaning way, but then the term was softening and became synonymous with mine, percanta or grela. The origin may be in a Gaucho, where 34 Americanism; paico " is " 34 horse; and then 34, paica " It would be a Mare. It should be noted that difficult to treat women and bad character usually is named " mares " in popular speech.
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