Links
Disavow
A Search Console tool for asking Google to ignore specific links to your site. Google says most sites will not need it.
You upload a text file listing the pages or domains whose links you want ignored. Google's help page says it can usually work out which links to trust on its own, and that you should disavow only when you have a considerable number of spammy, artificial or low-quality links and they have caused, or are likely to cause, a manual action.
In practice that means links someone bought or arranged in the past. The odd strange link from a scraper site, which every site collects, is not a reason. Google also warns that the tool can harm a site's performance if used incorrectly, because good links you disavow stop counting.
A manual action, if you have one, is shown in Search Console under Security and Manual Actions.