Definitions of culm

1. Mineral coal that is not bituminous; anthracite, especially when found in small masses.

2. The waste of the Pennsylvania anthracite mines, consisting of fine coal, dust, etc., and used as fuel.

3. Coal dust; refuse coal; the jointed stem of a grass.

4. The stalk or stem of cereals or of grasses.

5. The jointed stem of a grass.

6. The stalk or stem of corn and grasses, usually jointed and hollow.

7. Comminuted glance coal.

8. The stalk or stem of corn or grasses, usually hollow and jointed.

9. An impure shaly kind of coal or anthracite shale; culm measures, in geol., the anthracite shales of North Devon.

10. The stem of grasses and sedges.