Definitions from Wiktionary ( )

▸ adverb:  During or throughout the night, especially during the evening or night just past.
▸ adverb:  (figurative) In a very short (but unspecified) amount of time.
▸ adjective:  Occurring between dusk and dawn.
▸ adjective:  Complete before the next morning.
▸ adjective:  For which participants stay overnight.
▸ verb:  (intransitive) To stay overnight; to spend the night.
▸ verb:  (transitive, US) To send something for delivery the next day.
▸ noun:  Items delivered or completed overnight.
▸ noun:  An overnight stay, especially in a hotel or other lodging facility.
▸ noun:  (television, in the plural) Viewership ratings for a television show that are published the morning after it is broadcast, and may be revised later on.
▸ noun:  (obsolete) The fore part of the previous night; yesterday evening.

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