Can anybody tell me the markup language meaning?
Markup language is the one in which you use predefined tags or functions to perform tasks unlike programming languages where you define your own functions. :)
These are for processing and presentation of text by using predefined codes for formatting(tags)
As you break it down, it says you add some sort of marks in the code. In this case it is referred as tags. These marks(markup) helps the display the contents accordingly.
The way you can create by yourself by using particular tags.
hyper text markup language.... is language use to construct your site. by means of tags.
means language that uses tags