Fabric friction is an important clothing property, and slippery or anti-slippery fabrics are used for various purposes, such as garments, medical care, nursing, sports and so on. However, the meaning of the term “slippery” depends on the person or the investigation, and it involves sensory elements to a great extent. In order to eliminate any misunderstanding, it is necessary to differentiate between physical properties of slippery fabric using a friction coefficient and sensory properties of slippery fabric, and to clarify the difference between slippery and smooth. Following our investigation, this paper suggests a definition of the term “fabric friction.”