also: よ
noun, adverb
Refers broadly to the dark part of the day, from evening into night. It can be used as a noun or adverbially to mean 'at night' or 'in the evening.'
夜になると、この道は暗い。
At night, this road is dark.
夜、少し散歩した。
I took a short walk at night.
noun
Only with reading よる
Casual elliptical use of よる for the evening meal, understood from context as 夜ご飯 or 夕食. This sense is restricted to the reading よる.
今日の夜はカレーにしよう。
Let's have curry for dinner tonight.