Display category description

Hi,
thanks for your nice plugin.
i’m trying to hack the content-staff-member.php theme to display the category description just before the bio info.
How do you get these infos, as it is possible to give a description in the admin?
i already tryied these to get the category term with no luck…
<?php echo $staff_data[‘staff-member-category’] ; ?>
<?php echo $staff_data[‘staff_category’] ; ?>
<?php echo $staff_data[‘staff-category’] ; ?>
<?php echo $staff_data[‘category’] ; ?>

Any help appreciated