Meaning of THIS in English

pron & ·adj as an adjective, this has the same demonstrative force as the pronoun, but is followed by a noun; as, this book; this way to town.

2. this ·pron & ·adj as a demonstrative pronoun, this denotes something that is present or near in place or time, or something just mentioned, or that is just about to be mentioned.

Webster English vocab.      Английский словарь Webster.