noun
night
B1
Means 'night'. Nacht (die) refers to the period of darkness between evening and morning. Feminine noun with irregular plural Nächte (umlaut + -e). Common collocations: 'in der Nacht' or adverbial 'nachts'. Regular declension otherwise; genitive singular is 'der Nacht'. No special preposition required.
Examples
Die Nacht ist sehr dunkel.
The night is very dark.
In der Nacht schlafen die meisten Menschen.
Most people sleep at night.
Die Wanderer suchten Schutz in der Hütte, weil die Kälte in der Nacht stärker wurde.
The hikers sought shelter in the hut because the cold became stronger at night.
Details
Mnemonics
imagine the moon and stars when it's night
sounds a bit like 'notch' (think of a dark notch in the sky)
die → imagine the moon as feminine; think 'die Nacht' (the night)
Notes
A common noun meaning the period of darkness each day. Nouns are capitalized in German. Plural: Nächte.