rv = Array.new
s.scan(%r{<td class='index'[^>]*>.*?(\d+)\..*?</td>.*?<td class='word'>(?:<a.*?>)?([^>]+)(?:</a>)?</td>.*?<div class='definition'>(.+?)</div>.*?<div class='example'>(.+?)</div>}m) do |num, wrd, desc, ex|
rv = Array.new
s.scan(%r{<td class='index'[^>]*>.*?(\d+)\..*?</td>.*?<td class='word'>(?:<a.*?>)?([^>]+)(?:</a>)?</td>.*?<div class='definition'>(.+?)</div>.*?<div class='example'>(.+?)</div>}m) do |num, wrd, desc, ex|