This is the 7991st most frequent Portuguese word.
sabe
"(He/she/it) knows" or "Do you know?" (depending on context).
Here, 'sabe' is used as the verb 'know' in the sense of awareness or knowledge, directed towards the second person, 'você'.
Você sabe onde está o restaurante?
Do you know where the restaurant is?
In this context, 'sabe' conveys the ability or skill to perform an action, indicating that the subject 'he' lacks this ability.
Ele não sabe nadar.
He doesn't know how to swim.
Here, 'sabe' is used colloquially as an interjection to draw attention or initiate a conversational statement, akin to 'you know' in English.