matrilineal
a. Device used to determine direction, latitude, and local time.
b. Sailing ship capable of long-distance exploration
c. Circular ceremonial roombuilt by the Anasazi.
d. Reliting to, based on, or tracing descent through the maternal life
"Matrilineal" is an adjective describing something that relates to, is based on, or traces descent through its maternal side ... the line of its mother.
