where

Từ điển Oxford Advanced Learner 8th

where adverb, conjunction BrE [weə(r)] NAmE [wer]
adverb
1. in or to what place or situation
• Where do you live?
• I wonder where they will take us to.
•Where (= at what point) did I go wrong in my calculations?
•Where (= in what book, newspaper, etc.) did you read that?
•Just where (= to what situation or final argument) is all this leading us?
2. used after words or phrases that refer to a place or situation to mean ‘at, in or to which’
• It's one of the few countries where people drive on the left.
3. the place or situation in which
• We then moved to Paris, where we lived for six years.

Word Origin:
Old English hwǣr, of Germanic origin; related to Dutch waar and German wo.
 
conjunction
(in) the place or situation in which
• This is where I live.
• Sit where I can see you.
•Where people were concerned, his threshold of boredom was low.
•That's where (= the point in the argument at which) you're wrong.

Word Origin:
[where] Old English hwǣr, of Germanic origin; related to Dutch waar and German wo.