RemixIconEx.System.loader_3

You're seeing just the function loader_3, go back to RemixIconEx.System module for more information.
Link to this function

loader_3(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.System.loader_3()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M3.055 13H5.07a7.002 7.002 0 0 0 13.858 0h2.016a9.001 9.001 0 0 1-17.89 0zm0-2a9.001 9.001 0 0 1 17.89 0H18.93a7.002 7.002 0 0 0-13.858 0H3.055z" />
</svg>

example usage

svg.icon {
  width: 96;
  height: 96;
}