1. (noun) the time after sunset and before sunrise while it is dark outside

• dark
• nighttime

2. (noun) Roman goddess of night; daughter of Erebus; counterpart of Greek Nyx

• nox

1. (noun) the time after sunset and before sunrise while it is dark outside

• period
• period of time
• time period

2. (noun) a period of ignorance or backwardness or gloom

• period
• period of time
• time period

3. (noun) the period spent sleeping

• period
• period of time
• time period

4. (noun) the dark part of the diurnal cycle considered a time unit

• time unit
• unit of time

5. (noun) darkness

• dark
• darkness

6. (noun) a shortening of nightfall

• crepuscle
• crepuscule
• dusk
• evenfall
• fall
• gloam
• gloaming
• nightfall
• twilight

7. (noun) the time between sunset and midnight

• period
• period of time
• time period

1. (noun) the time after sunset and before sunrise while it is dark outside

• wedding night
• weeknight

1. (noun) the time after sunset and before sunrise while it is dark outside

• day
• daylight
• daytime

1. (noun) the time after sunset and before sunrise while it is dark outside

• nightly