registration window

noun
UK /ˌredʒ.ɪˈstreɪ.ʃən ˈwɪn.dəʊ/
US /ˌredʒ.ɪˈstreɪ.ʃən ˈwɪn.doʊ/

A registration window is a special time when you are allowed to sign up for something.

The registration window for summer camp opens on Monday.


OTHER MEANINGS

2. A short period during which students can choose or change their classes.

Check the school website for the class registration window.

3. A time slot when a vehicle's official papers must be renewed.

The car registration window closes at the end of the month.

4. A small opening or screen area where you complete a sign-up form online.

Fill in your name in the registration window before you continue.