The word "曾孙女" is formed by combining the character "曾", which denotes "great-" in familial context, indicating an additional generation, with "孙女", meaning "granddaughter". "孙" refers to a grandchild, and "女" specifies female gender, so "孙女" is a female grandchild. Thus, "曾孙女" specifically means a great-granddaughter, referring to the daughter of one's grandchild.