what is the use of Google disavow tool ?

what is the use of Google disavow tool ?

Google's link disavowal tool allows publishers to tell Google that they don't want certain links from external sites to be considered as part of Google's system of counting links to rank web sites.

With the help of the disavow tool, one can remove the spammy links pointing towards their domain and which they think are not necessary.

The Disavow tool is part of Google Search Console (formerly Webmaster Tools) that allows websites to discount the value of an inbound link, helping to prevent against link-based penalties.

The name itself suggests the answer, you can disavow backlinks using disavow tool

Google disavow tool allows you to tell Google to remove bad, low quality, harmful backlinks that can effect your page rank.