adverbial noun / temporal noun:

• on the brink of
• morning and evening; day and night

noun:

• six o'clock
• six periods of a day (morning, midday, afternoon, evening, midnight, late night) ［六時］ - Buddhism term ➜ 晨朝・日中・日没・初夜・中夜・後夜

noun:

• growing older
• aging ceremony (on New Year's Eve or the last night of winter)

noun:

• metal rod; metal bar; iron rod; crowbar
• iron club; iron staff with rings on top (traditionally used by night watchmen)

noun:

• holiday; day off; absence - polite language
• sleep; rest - honorific language

expression:

• Good night - abbreviation - usually written using kana alone ➜ お休みなさい

noun:

• overnight stay; stopover
• inn; hotel
• anchorage
• night duty - abbreviation ➜ 泊まり番【とまりばん】

noun:

• chancy trade (business) with a high turnover rate and uncertain profitability
• the entertainment, eating, and drinking business
• the night entertainment (nightlife) business

noun:

• fire ship
• steamship (esp. a paddle steamer); steamboat ［かせん］
• ship with a fire to attract fish while net fishing at night (prior to the invention of electric fish-luring lights) ［ひぶね］

noun:

• grey nightjar (Caprimulgus indicus)
• nightjar (any bird of family Caprimulgidae); goatsucker
• streetwalker; low class prostitute (Edo period) ［夜鷹］
• soba vendors who walk around at night; soba sold by these vendors ［夜鷹］ - abbreviation ➜ 夜鷹蕎麦

noun:

• one chance; only opportunity - abbreviation ➜ ワンチャンス
• maybe; perhaps; there is a chance that - slang
• one-night stand - slang

noun:

• oar
• all ➜ オールＡ

noun / ~する noun:

• (pulling an) all-nighter; staying up all night long - colloquialism - abbreviation ➜ オールナイト

~する verb (spec.):

• to penetrate; to sink in
• to devote oneself (to); to do intently and exclusively
• to do throughout (e.g. the night)