This is the 12150th most frequent French word.
veilleront
"Veilleront" means "will watch over" or "will ensure."
Here, 'veilleront' is used in the sense of 'to watch over' or 'to ensure the well-being of.'
Les parents veilleront sur leurs enfants pendant leur sommeil.
Parents will watch over their children while they sleep.
In this sentence, 'veilleront' refers to 'making sure or ensuring that something is done properly.'
Les employés veilleront à respecter les consignes de sécurité au travail.
Employees will ensure that they follow the safety instructions at work.
The word 'veilleront' here means 'to oversee or supervise an activity or process.'