Darkness, or a dark or gloomy environment.
To murder or seriously injure.
To make murky or be murky; to cloud or obscure, or to be clouded or obscured.
Dark, murky
Sunset.
A hat with a wide brim to shade the eyes from sunlight.
to experience an episode or an onset of some detrimental mental condition like agitation, anxiety, hallucination or dementia, daily at nightfall.