hide "user account" page from Search engines?

In a search of Google, we see that the results are now including a few of our subpages, which is fine – we added a schema.org plugin to help this along.

But, we also noticed that the /user page is getting picked up for some reason.

Not sure where/how to prevent that, short of adding something to .htaccess or robots.txt

Drupal version: 

Source: https://www.drupal.org/taxonomy/term/22/feed