I downloaded gcide dictionary file gcide_xml-0.53.zip from
https://www.ibiblio.org/webster/gcide_xml-0.53.zip
The files are not in XML format. They do have .xml extensions, but the content is not XML.
head gcide_s.xml
<!--
Despite what the next comment says,
this is file gcide_s.xml of GCIDE_XML 0.53,
a translation of GCIDE 0.53 into XML.
Could you please re-upload the correct version?
Thank you.