1. the period of darkness between sunset and sunrise
2. the evening of a particular day
3. darkness or the absence of light

1. during the night; at night
Usage: informal

Examples

• The stars shine brightly at night.
• I couldn’t sleep last night because of the storm.
• We’re going to the theater tomorrow night.
• The city looks beautiful at night with all the lights.
• She works the night shift at the hospital.
• Good night, sleep well!
• The owl hunts at night.