This is the 278th most frequent Danish word.
alle
"Alle" in Danish means "everyone" or "all."
In this sentence, 'alle' refers to everyone or all the people in general.
Alle er glade for at være her.
Everyone is happy to be here.
Here, 'alle' is used to emphasize that every single one in the group, the children, received a gift.
Børnene fik alle en gave.
The children each received a gift.
In this case, 'alle' is used to denote the totality of the details being referred to.