{{Wiktionary/doc}} is a template that puts a little link to Wikitionary on a page. It's designed mainly for use on pages in category:jargon, slang and colloquialisms to help non-British readers understand better the slang that appears in Doctor Who fiction.
To use where our PAGENAME is the same as the Wiktionary PAGENAME, just type {{Wiktionary}}.
If our PAGENAME is different, then enter the Wiktionary name thus: {{Wiktionary|Wiktionary PAGENAME}}. If I wanted to link this page to the wiktionary page on baseball, I'd type {{Wiktionary|baseball}}.