A brazilian expression. It basically means to use improvised methods / solutions to solve a problem, with any avaiable material.

English equivalents would include "McGyverism", "Kludge","Quick Fix", "Alternative Engineering", "Workaround", and so on.
Person 1: I fixed the shower, go take a look at it!
Person 2: What's with all those wires? Thats one hell of a gambiarra you did!
Person 1: Hey, at least it works!... kinda.

Person 1: Thank goodness you made the car work again! have you made a gambiarra?
Person 2: I prefer to call it 'alternative engineering'
by Shareazu2 October 4, 2013
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