This is the 3536th most frequent Spanish word.
hueco
A hollow, gap, or empty space.
Here, 'hueco' signifies a free period or availability in a schedule.
Tengo un hueco en el horario para reunirme.
I have a slot in the schedule to meet.
In this context, 'hueco' denotes an empty space or gap between objects, in this case, trees.
Encontramos un hueco entre los árboles para acampar.
We found a space among the trees to camp.
In this sentence, 'hueco' refers to an opening or cavity within a physical object, specifically a wall.