(bound form) family name; surname (as in 王氏[Wang2 shi4] "the Wang clan
Pictograph of a tool similar to a hammer that is shaped like deer antlers. Original meaning unclear.
《說文》：“氏，巴蜀山名岸脅之旁箸欲落者曰氏。氏崩聲聞數百里。象形，乀聲。”