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1. (slang) to fail, to flunk(an exam)
2. (slang) to fail, to flunk (a course) [+ em (object)] or [+ a (object)]
3. to make a mistake, to go wrong
4. to repair (a ceramic piece) by means of wires (gatos)
5. to shape (a vessel) into a curve by means of an iron utensil (gato)