Usages of el hueco
A lo mejor la llave está en ese hueco o en la ranura.
Maybe the key is in that hole or in the slot.
Sigo buscando en el hueco por si hay otra ranura oculta.
I keep looking in the hole just in case there is another hidden slot.
Elon.io is an online learning platform
We have an entire course teaching Spanish (Latin America) grammar and vocabulary.