countable/uncountable the part of the day between the end of the afternoon and night, including the time when the sun goes downWe spend most evenings reading or listening to music.
on Monday/Tuesday etc evening: I’ll see you on Monday evening, OK?
on Monday/Tuesday etc evening(s) (=every Monday/Tuesday etc evening): We usually go to the theatre on Thursday evenings (=every Thursday evening).
in the evening(s): I’m so tired in the evenings, all I want to do is sit and watch television.
yesterday/tomorrow evening: Police say the incident took place at around 9 o’clock yesterday evening.