Top definition
The lights that must be turned on and off in a sequential order so you can safely make it from one area of the house to another when it is dark.
I came in through the back door and had to set relay lights in the kitchen, the dining room and finally my room. I then had to turn the relay lights off in that order: the back door light, the kitchen light, and then the dining room light so I could safely make it to my room without tripping over chairs or hitting counter tops or walls.
by Mandevar December 27, 2009
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug