This is the 900th most frequent French word.
auront
"Will have" (third person plural future tense of "avoir").
The word 'auront' is used here as the future tense of 'avoir', meaning 'to have', and indicates possession of a meeting by 'they' in the future.
Demain, ils auront une réunion importante.
Tomorrow, they will have an important meeting.
Here, 'auront' is used in the context of future conditions, showing consequences of their actions.
S'ils travaillent dur, ils auront de meilleures opportunités.
If they work hard, they will have better opportunities.
In this sentence, 'auront' is used in a general future implication, indicating possession or experience by the children in a temporal progression.