Definition Of short-circuit
(with reference to an electrical device) malfunction or fail, or cause to do this, as a result of a short circuit across it.
the birds caused the electricity supply to short-circuit
in a device, an electrical circuit of lower resistance than that of a normal circuit, typically resulting from the unintended contact of components and consequent accidental diversion of the current.
You can create closed loops and boxes without short circuits by using dead connectors.