This is the 6475th most frequent Portuguese word.
ecoa
"Ecoa" means "echoes" or "resounds."
Here, 'ecoa' is used as a verb meaning 'to echo,' describing the rebounding of sound in a space.
O som ecoa pela caverna.
The sound echoes through the cave.
In this case, 'ecoa' is used metaphorically to describe something that resonates or lingers in thought.
Sua voz ecoa na minha mente.
Your voice echoes in my mind.
Here, 'ecoa' is applied in a poetic sense to indicate that the emotion is reflected or expressed subtly.