This is the 94th most frequent Portuguese word.
todas
"Todas" means "all" or "every" (feminine plural).
'Todas' is used as a feminine plural pronoun meaning 'all' to refer to multiple feminine items, in this case, 'páginas'.
Eu li todas as páginas do livro.
I read all the pages of the book.
'Todas' is used as a feminine plural adjective meaning 'all' to describe the noun 'flores', suggesting that the entire group possesses the attribute of being beautiful.
As flores no jardim são todas bonitas.
The flowers in the garden are all beautiful.
'Todas' is used as a feminine plural pronoun meaning 'all' to refer to a group of feminine subjects, in this case, an unnamed group represented by 'elas'.