The `taxonomy` system doesn't have any meta_data feature. Without constructing another table, your option seems to me to be to store the taxonomy information in the `$wpdb->options` table [using the appropriate functions][1].

Honestly, I can't help but think that you are trying to use the taxonomy system for something beyond what it was meant for and that you should be considering post meta or a custom post type. 

Or, you should be using multiple taxonomines-- one for directory, one for the director's nationality, etc. 

It is hard to say more without more detail about your project, but that's what I've got for now.


  [1]: http://codex.wordpress.org/Options_API