An Ulu is an all-purpose knife traditionally used by Inuit, Yupik, and Aleut women. It is utilized in applications as diverse as skinning and cleaning animals, cutting a child's hair, cutting food, as a weapon and, if necessary, trimming blocks of snow and ice used to build an igloo.
Uluit have been found that date back to as early as 2500 BCE. Traditionally, the ulu would be passed down from generation to generation. It was believed that an ancestor's knowledge was contained within the ulu and thus would also be passed on.