Its small seal script is
which is like a concave U.
I need to point out that that character is not from the official Xinhua Dictionary, but an informal small seal online converter tool website. So it should be written by modern people. But it should be similar to the one which whould have been written by Mr. Si Li, who created the small seal script 2000+ years ago. He might have written this character, but lost in the history.
Its clerical script is
similar to the small seal script
Its current standard printing script for traditional or simplified character is
same as the clerical script.
Its Pinyin is "Ao1".