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]

Narrower term/s

• denim
• flannel
• composite twill
• twill diaper
• [twill by pattern][+]
  • bird's-eye twill
  • broken twill
  • chevron twill
  • lozenge twill
• serge
• drill (textile)
• tartan
• gabardine
• dungaree

Anotations

Scope note:

Refers to a woven textile characterized by parallel diagonal ridges or ribs, produced by passing the weft threads over one and under two or more threads of the warp, instead of over and under in regular succession, as in plain weaving. Regular twill features a diagonal line that is repeated regularly, usually running from the left to right at a 45-degree angle and upward. The weave may be varied in several ways, including changing the angle or direction of the twill line, as exemplified in herringbone twill.