This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The stem of a grass or similar plant.

n. Waste from anthracite coal mines, consisting of fine coal, coal dust, and dirt.

n. Carboniferous shale.

n. Inferior anthracite coal.

n. waste coal, used as a poor quality fuel; slack.

n. anthracite, especially when found in small masses

n. the stem of a plant, especially of grass or sedge

n. The stalk or stem of grain and grasses (including the bamboo), jointed and usually hollow.

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

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

n. Coal-dust; slack; refuse of coal.

n. In mining, a soft or slaty and inferior kind of anthracite, especially that occurring in Devonshire, England.

n. The name given by some geologists to a series of rocks which occupy the position of the Carboniferous limestone (see carboniferous), but which, instead of being developed in the form of massive calcareous beds, are made up of slates, sandstones, and conglomerates, and occasional beds of coal, usually of inferior quality.

n. In botany, the jointed and usually hollow stem of grasses.

n. stem of plants of the Gramineae

"Variations in the diameter of the shaft (called a culm), in the prominence of the nodes, and in the rate of tapering at the end of the culm all make certain applications difficult."

culms   

stalk    stem   

stall   

clinkers    tuff    red-stone    nephrite    Maltese    pencilling    ticketsd    palliasse    sunhat    pumice