noun, adverb
daytime; midday; broad daylight
Often used in formal or emphatic contexts, especially to stress that something happens in broad daylight. Can be used as a noun or adverbially.
白昼の強盗事件が発生した。
A robbery occurred in broad daylight.
白昼、街を歩く人は少なかった。
Few people were walking around the town at midday.