- 1a day of the week when students go to school I get up very early on schooldays.
- 2the hours during which school is open The schoolday ends at 3:00 p.m.
- 3the part of the day that students spend at school Her schoolday started with a math test.
- 4 schooldays [plural] the period in your life when you go to school She hadn't seen Laura since her schooldays. Her schooldays had definitely not been the happiest days of her life.