verb, -plugged, -plug⋅ging.| 1. | to remove a plug or stopper from. |
| 2. | to free of an obstruction; unclog. |
| 3. | to disconnect (an appliance, a telephone, etc.) by removing a plug: to unplug a toaster. |
| 4. | to remove (an electric plug) from an outlet. |
| 5. | to become unplugged. |