noun

nightfall

nightfall, dusk, twilight

We must return home before nightfall.

We must return home before nightfall.

The animals come out at nightfall.

The animals come out at nightfall.

((at/before/until)) nightfall the time in the evening when it becomes dark They worked from dawn until nightfall.

Synonyms: dusk, twilight, sundown; Antonyms: dawn, daybreak

A compound of 'night' and 'fall'. The time when night 'falls' or begins.

Imagine the sun 'falling' below the horizon, and the 'night' beginning.

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