RemixIconEx.User.admin

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

admin(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.User.admin()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M12 14v2a6 6 0 0 0-6 6H4a8 8 0 0 1 8-8zm0-1c-3.315 0-6-2.685-6-6s2.685-6 6-6 6 2.685 6 6-2.685 6-6 6zm0-2c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm9 6h1v5h-8v-5h1v-1a3 3 0 0 1 6 0v1zm-2 0v-1a1 1 0 0 0-2 0v1h2z" />
</svg>

example usage

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