This is the 5315th most frequent Spanish word.
largas
"Largas" means "long ones" or "lengths" in English.
In this sentence, 'largas' describes the length of time of 'vacaciones', emphasizing duration.
Las vacaciones de verano son largas.
Summer vacations are long.
Here, 'largas' qualifies the physical length of 'pestañas', describing an attribute.
Ella tiene unas pestañas largas.
She has long eyelashes.
In this context, 'largas' again denotes duration, but specifically in relation to events such as meetings.