Say "no" with google robots

No follow is an attribute which tells search engines not to count the link in question towards increasing the authority of the destination site or page.

Nofollow is an HTML attribute value used to instruct search engines bots that a hyperlink should not influence the link target's ranking in the search engine's index.

No link juice. Simple is that

If a search engine finds a “no follow” backlink it will just ignore the link and will not get deeper into crawling and no link juice is passed.

If search engines discovers a “no follow” back-link it will just neglect the weblink and will not get further into creeping and no backlinks is passed.

yeah right you have told all words in single line

It is a value that can be assigned to the rel attribute of an HTML a element to instruct some search engines that the hyperlink should not influence the ranking of the link's target in the search engine's index.

Nofollow is an HTML attribute value used to instruct search engines bots that a hyperlink should not influence the link target’s ranking in the search engine’s index. It is intended to reduce the effectiveness of certain types of search engine spam, thereby improving the quality of search engine results and preventing spamdexing from occurring in the first place.

Nofollow is a value that can be assigned to the rel attribute of an HTML a element to instruct some search engines that the hyperlink should not influence.

A Nofollow is an HTML attribute which is used in order to instruct the search engines that the hyperlink should not influence the ranking of the linked page...

In short, no follow means your link or the link on the page is not directly linked.
In short, you have created a backlink to your website A on website B.
Nofollow link will tell search engines that your website B is not directly linked to the your website A.

No-follow is an HTML attribute value used to instruct search engines bots that means a hyperlink should not influence the link targets ranking in the search engines pages.

Specially for newbies who are new to SEO or people who are still not clear about Nofollow or dofollow, this post will be useful. ... Nofollow is an HTML attribute value used to instruct search engines bots that a hyperlink should not influence the link target's ranking in the search engine's index

Nofollow refers to an anchor link on a webpage that has the following attribute attached to it:

rel="nofollow"

So if you were to inspect the source code of a "nofollow" link you'd see the following:

Random Website

It's basically a signal to search engines not to count it as part of a website's link profile. It was designed to stop spammers.