1. Any of the seven days of the week, typically Monday through Friday, excluding weekends
I work Monday to Friday, so weekdays are very busy for me.
Trabalho de segunda a sexta, então os dias de semana são muito ocupados para mim.
2. A day that is not Saturday or Sunday
The store has different hours on weekdays versus weekends.
A loja tem horários diferentes nos dias de semana e nos fins de semana.