Quite a number of th Chinese symbols have the meanings of the radicals and characters at the same time.
It also refers to ‘ 广 ‘. As the radical ‘广’ has the following reading and meaning: ‘yǎn shelter’. As the character: ‘guǎng wide’
More about Chinese radicals: ‘Table of the Chinese Radicals’ by Polina Shinkina http://www.lulu.com/content/e-book/table-of-the-chinese-radicals/18919021 and http://www.lulu.com/spotlight/polina985