This is the 82nd most frequent Lithuanian word.
šios
"Šios" means "these" (feminine, genitive or nominative plural).
The word 'šios' here refers to 'today's', indicating possession regarding 'dienos' (day).
Šios dienos oras yra nuostabus.
Today's weather is wonderful.
In this sentence, 'šios' modifies 'knygos' (book), referring to the specific book being discussed.
Visiems patiko šios knygos turinys.
Everyone liked the content of this book.
The term 'šios' points to 'informacijos' (information), signifying a particular information that is contextually clarified.