This is the 5836th most frequent Spanish word.
soñó
"Soñó" means "he/she/it dreamed" (past tense of "soñar").
Here, 'soñó' is used in its literal sense to indicate that she dreamed or had dreams about traveling.
Ella soñó con viajar por el mundo.
She dreamed of traveling around the world.
In this sentence, 'soñó' describes a specific dream he had while sleeping, related to his past.
Juan soñó con su infancia anoche.
Juan dreamt about his childhood last night.
Here, 'soñó' is used metaphorically to refer to daydreaming or envisioning something while awake.