1. last night - Noun
2. last night - Adverb
last night (uncountable)
(often used adverbially) The evening or night immediately before the present.
He said he didn't get any sleep last night and I know he hadn't gotten much the previous night.
Last night was wonderful. Can I see you again?
last night (not comparable)
during the previous day’s nighttime; during the night before today
We partied last night.
I saved a girl from being attacked last night. I controlled myself. Rodney Dangerfield
Last night I stayed up late playing poker with Tarot cards. I got a full house and four people died. Steven Wright
Last night I woke up with someone squeezing my hand. It was my other hand. William S. Burroughs
Cured yesterday of my disease, I died last night of my physician. Matthew Prior
I stayed in a really old hotel last night. They sent me a wake-up letter. Steven Wright
Last night I made a thousand plans, but this morning I went my old way. Chinese Proverb