1. [n]  (military) signal to turn the lights out
2. [n]  a prescribed bedtime

Lights Out
In this scientific investigation, an anthropologist and biologist illustrate the ways in which one`s sleeping and eating patterns effect one`s health. They advise readers to sleep in complete darkness and to adjust their diets according to the weather. They also argue that devious government officials are withholding vital medical information from the public.

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