If you want to hide an individual page from the search results you need to use our "Hide Page from Search" setting that's found under Pages > Advanced Settings. Every page has an Advanced Settings link where you can access this setting.  Follow our short guide for help with this:

http://kb.weebly.com/hidden-search.html

Note that this will hide the page from your own site search as well as Google and other public search engines. 

Also note that the other Page setting called "Hide Page from Navigation" does not hide that page from search results; all it does is remove the page from your navigation menu so that no link to it appears in your site's navigation. 

If you want to block search engine access to your entire site (as opposed to just specific pages), you can do so by checking the box next to "Hide site from search engines" under the SEO heading on the Settings tab in the Weebly editor.

Be sure to save and publish your site for these changes to take effect.