What is the meaning of Wiedzieć?

to know (to have knowledge; to have information, be informed) [with o (+ locative) ‘about something’; in addition, with od (+ genitive) or przez (+ accusative) or po (+ locative) or instrumental ‘from what’]

to know how, to be able to

to know (to perceive the truth or factuality of; to be certain of or that) [with o (+ locative) ‘about something’ and po (+ locative) ‘from what’]

to know (to be aware of; to be cognizant of) [with o (+ locative) ‘about something’]

to know (to have knowledge; to have information, be informed)

to know (to understand or have a grasp of through experience or study)

to know (to possess knowledge) [with ô (+ locative) ‘about something’]

Source: wiktionary.org