An eygre is a tidal bore - still called an aegir today.    From Wordnik.com.  [Archive 2005-09-04] Reference

As you may have heard, Ægir (formally known as Hostmaster2, http: / / groups. drupal.org / aegir-hosting-system) is a set of modules for Drupal which allows you to deploy and maintain other Drupal sites.    From Wordnik.com.  [BC Bloggers] Reference