I frequently split my windows, I usually kill the buffer using the

menu bar. But this leaves me with the window open with some other

buffer. Would like to request some facility to delete a window

(delete-window) using the mouse

How about having `Close' in context menu?

I cannot understand this terminology. How does one access the context

menu?

Recent Emacs comes with an interface `context-menu'.

Customize context-menu to have a menu item that deletes window would

meet your request.

Such a menu is useful in general and I think it is good have it by

default.