This is the 6475th most frequent German word.
einlass
Entry or admission.
Here, 'Einlass' means 'admission' referring to the beginning of entry into an event.
Der Einlass zur Veranstaltung beginnt um 18 Uhr.
Admission to the event starts at 6 PM.
In this context, 'Einlass' represents 'entrance' where ticket checking occurs.
Am Einlass prüften sie die Eintrittskarten.
At the entrance, they checked the tickets.
'Einlass' here conveys 'permission to enter' indicating the authorization needed to access an area.