Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by origin]
6. biological material
7. plant material
8. [wood and wood by product]
9. wood (plant material)
10. [wood by composition or origin]
11. hardwood
12. elm (wood)

Anotations

Scope note:

Fine-grain, durable wood of the species Ulmus americana, used chiefly for ship building, ax handles, or other uses requiring a combination of strength, bending qualities, and ability to withstand rough usage.