1. a small light left on at night, typically in a bedroom or hallway, to provide dim illumination for safety or comfort
Usage: commonly used in children's bedrooms; also written as 'night light' (two words)

Examples

• The child felt safer sleeping with a nightlight on in the corner of the room.
• We installed a nightlight in the hallway so we could see when walking to the bathroom at night.
• The soft glow of the nightlight was just bright enough to prevent stumbling in the dark.
• Many parents use a nightlight to help their toddlers adjust to sleeping alone.
• The nightlight automatically turns on when it gets dark outside.
• She plugged in a small nightlight shaped like a moon above her bed.