An ulu (Inuktitut syllabics: ᐅᓗ, plural: uluit, English: “woman’s knife”) 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 and, if necessary, trimming blocks of snow and ice used to build an igloo.
My daughter lived for a while in Valdez, Alaska and bought it for me. I use this almost every day to dice vegetables and meat. It works with a rocking motion and is a very aggressive cutting tool. It even cuts frozen foods!