This is the 11310th most frequent Spanish word.
escondió
"Hid."
In this sentence, 'escondió' is used to indicate an action in the past where the subject concealed objects from view deliberately.
El niño escondió sus juguetes debajo de la cama.
The boy hid his toys under the bed.
Here, 'escondió' is reflexive ('se escondió'), meaning the subject (she) concealed herself out of sight.
Ella se escondió detrás de la puerta para no ser vista.
She hid behind the door to not be seen.
This usage of 'escondió' involves an act of intentionally putting something in a concealed location.