The shell bone script of character Drum is
This is a side view of a drum, the drum faces are toward to side, not on the top.
The top three are formed by character Ox (on the higher image), and the drum and support on the bottom. Many people believe that the character Ox indicates that the drum face is made from Ox skin. The lower image doesn't have full character Ox, only the top part of character Ox, people believe that it is a decoration of an ox head.
The bronze script of the character is
Similar to shell bone script.
The small seal script of the character is
The character as Drum discontinued to be used, probably sometime in Qin Dynasty or earlier because there is no clerical script of the character, which means that the character was not used in Han Dynasty (right after Qin Dynasty).
Another character Drum - 鼓 (Post 138) has replaced the one in this post. The simplified Chinese has removed it, only traditional Chinese still keeps it. But it exists in many compound characters, such as 鼓, the one replaced it.
Its Pinyin is Shu4.