culm
n.（名词）The stem of a grass or similar plant.空心杆：草或类似植物的茎
来源：Latin culmus [stalk] 拉丁语 culmus [主茎]
culm
culm 2
n.（名词）Waste from anthracite coal mines, consisting of fine coal, coal dust, and dirt.无烟煤废渣：无烟煤煤矿的废弃物，由细粒无烟煤、煤尘和尘土构成
Carboniferous shale.碳质页岩Inferior anthracite coal.劣质无烟煤
来源：Middle English colme [coal dust] 中古英语 colme [煤尘] perhaps from Old English col [coal] 可能源自 古英语 col [煤]
