taking up, extending through, or occurring continually during an entire night; nightlong: an all-night vigil.
open all night, as for business; providing services, accommodations, etc., at all hours of the night: an all-night restaurant.

1520–30 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To all-night
Example sentences
Now they are advised to serve as chaperones at all-night graduation parties.
There is all-night music and dancing in the streets.
Twenty-somethings jet in on low-cost airlines for the all-night club scene.
He cut a dashing figure in his fatigues and red beret, and peasants at
  all-night rallies found his oratory entrancing.
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