title: How to get custom taxonomy slug(s)?
body: <p>I m making a WordPress portfolio theme for the WordPress theme directory.
  I created a taxonomy (name: <code>speciality</code>) for my custom post type <code>portfolio</code>. I can get the list:</p>
  
  <pre><code>echo get_the_term_list( $post-&gt;ID, 'speciality', 'Portfolio Specialities: ', ', ' );
  </code></pre>
  
  <p>But I need a list of slugs for this 'speciality' taxonomy. Even I want single slug-name ' speciality's' taxonomy.</p>
  
  <p>How can get this custom taxonomy's slug/slug-name list?</p>