All Octicons
feed-heart
React
import {FeedHeartIcon} from '@primer/octicons-react' <FeedHeartIcon size={16} />
Rails
<%= render(Primer::Beta::Octicon.new(:"feed-heart", size: :small)) %>
Jekyll
{% octicon feed-heart height:16 %}
Figma
This icon is called feed-heart
in Primer's Octicons library.