Definition of "last night" []

• The evening or night immediately before the present. (noun)
• During the previous day’s nighttime. During the night before today. (adverb)

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• "Lieutenant Jamerson went home with me last night after his altercation with Mason."
• "I ran into some tweaked-out guy named Brandon last night while I was bar hopping with a few friends."
• "I wrote up the warrant last night and faxed it over to Judge Shapiro."