midnight

Universal Words noun [U] 1 12 o'clock at night: They had to leave at midnight. * on the stroke of midnight / shortly after midnight * She heard the clock strike midnight. * Let's have a midnight feast tonight (= a secret meal that children like to have in the middle of the night). * We have to catch the midnight train. 2 (especially AmE) = MIDNIGHTBLUE IDIOMS see BURNv., FLITn.