Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by form]
6. [materials by physical form]
7. [fiber and fiber by product]
8. [fiber by product]
9. textile materials
10. [textile materials by process or technique]
11. [textile materials by weaving technique]
12. twill

Anotations

Scope note:

A coarse, hard-wearing cotton fabric made from colored yarn, often blue in color, and typically used to make work clothes. Later, a heavy cotton fabric similar to this, particularly North American blue denim.