Does BR tag posseses height?

The <br /> tag is for line breaks. You can use the CSS line-height property to control distance between lines, if you want to look at it that way.

for large distances between lines, is better to use <p> tags for every line, in which you can control the height.

http://jsfiddle.net/efortis/f6ju2/

The BR element forcibly breaks (ends) the current line of text...

More info here. and yes, adding more will increase the distance but I don't believe you can do much for styling it except applying clear.