nightlight

noun

1. (countable)A small, dim light or lamp left on overnight.

   “She had brought in with her the night-light that had been burning outside her door. She blew it out.”

   “They made you give up / your nightlight / and your teddy / and your thumb.”

   “1988, Joseph Brodsky, "Gorbunov and Gorchakov" Canto 13 in In Urania, New York: Farrar, Straus and Giroux, p. 165, Your light cannot drive off the dark from me— / not any more than night-lights by the bed / drive off my dreams.”

   “He put a small nightlight in the bathroom to find his way around in the dark.”

2. (uncountable)Light that shines at night, such as moonlight or starlight.

   “The floor-cloth deadened his footsteps as he moved in that direction through the obscurity, which was broken only by the faintest reflected night-light from without.”

   “[…] the man held up two small objects faintly twinkling in the nightlight;”

   “Their made-up faces were garish in the night-light and as they walked they stared fixedly ahead, afraid to make a sideways glance in case it should be called soliciting.”