COLLOCATIONS last night at night (=when it is night) in/during the night (=at a particular point in the night) in the middle of the night all night (long) by night (=at night, rather than in the day) at this time of night (=used when you are surprised) in/at the dead of night literary (=in the middle of the night when it is quiet) spend/stay a night somewhere stay the night (=sleep at the house of someone you are visiting) night train/bus/flight night falls written (=it starts to become dark) the night air the night sky