1. (pron.)this (used to indicate a person, thing, idea, or event as present, near, just mentioned, or by way of emphasis): This is my coat.
2. this (used to indicate one of two or more persons, things, etc., referring to the one nearer in place, time, or thought; This is Liza and that is Amy.
3. this (used to indicate one of two or more persons, things, etc., implying a contrast; Do this, not that.
4. this what is about to follow: Watch this!
5. (adj.)this (used to indicate a person, place, thing, or degree as present, near, or characteristic): This book is mine.
6. this (used to indicate the nearer in time, place, or thought of two persons, things, etc.;
1. (determiner)this indicates sb or sth which is closer than others Do you like this one or that one best?; I love living in this city.
2. this indicates sb or sth which has already been mentioned My husband is in poor health, and it is for this reason that I must resign.
3. this indicates a timeperiod is happening today, now, or soon The new show starts this week.
4. this this Monday/Tuesday/Wednesday etc. the Monday, Tuesday etc. immediately followingtoday We're meeting this Friday.
5. this this morning/afternoon/evening the morning, afternoon, etc. of today I'll see you this afternoon.
6. this these days in the present time, not the past These days kids are much more sophisticated.
7. this emphasizes the subject of a story There was this woman who kept stepping on my toes.
8. (pronoun)this indicates sb or sth which is closer than others Is this his bike?; She really wanted these.
9. this used to show sth or introduce sb This is my photo album.; Hold the bat like this.; This is my Aunt Fatima.
10. this this is ... used to introduce yourself on the telephone Hello, this is Christopher Martin speaking.
11. this indicates sb or sth which has already been mentioned OK, are you ready to try this?
12. this this and that/this, that, and the other various things or activities "What have you been doing?" "Oh, this and that."
13. (adverb)this emphasizes adjectives I didn't realize it was going to be this hot.
14. this used to show sb with your hands how big sth is It was about this long and this wide.
Definition of 'this'
Webster Dictionary
1. this 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
2. this as an adjective, this has the samedemonstrativeforce as the pronoun, but is followed by a noun; as, this book; this way to town
Definitions of this 
Afrikaans: hierdie
Arabic: هذا: للإشارَه
Bulgarian: този
Brazilian: este
Czech: tento
German: diese/-r/-s
Danish: denne; disse
Greek: αυτός
Spanish: este, esta, estos, estas
Estonian: see, need
Farsi: این
Finnish: tämä
French: ce, cet, cette, ces
Hebrew: הַזֶה, הַזאת
Hindi: यह
Croatian: ovaj ,taj
Hungarian: ez
Indonesian: ini
Icelandic: þessi/þetta (hérna)
Italian: questo, questa
Japanese: この
Korean: 이것
Lithuanian: šis
Latvian: šis
Malay: ini
Dutch: deze, dit
Norwegian: denne, dette, disse; den,
Polish: ten
Portuguese: este
Romanian: acest, această, aceşti, a
Russian: этот; эти
Slovak: tento
Slovenian: ta
Serbian: ovaj
Swedish: den (det, de) här, denna,
Thai: (คน, สิ่ง) นี้
Turkish: bu
Taiwanese: 這
Ukrainian: цей, ця, це
Urdu: يہ
Vietnamese: dùng chỉ người, vật ở gần
Chinese: 这
