title: What does "slug" mean
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/4230846/what-is-the-etymology-of-slug">What is the etymology of &#39;slug&#39;?</a>  </p>
  </blockquote>
  
  
  
  <p>In CouchDB definitive guide the author used key "slug" in a document.</p>
  
  <pre><code>{
     "title": "Hello World",
     "slug": "hello_world"
  }
  </code></pre>
  
  <p>What does "slug" mean and why is it used?</p>