This is the 165th most frequent Lithuanian word.
ši
"Ši" means "this" (feminine) in English.
Here, 'ši' is used as a demonstrative pronoun modifying the noun 'knyga' (book) to refer to a specific book.
Ši knyga yra labai įdomi.
This book is very interesting.
In this sentence, 'ši' functions as a demonstrative pronoun modifying the noun 'gėlė' (flower), indicating a specific flower in discussion.
Ar tau patinka ši gėlė?
Do you like this flower?
Here, 'ši' is a demonstrative pronoun referring to the noun 'diena' (day), to specify the particular day being spoken about.