'Culm' definitions:

Definition of 'culm'

From: WordNet
noun
Stem of plants of the Gramineae

Definition of 'Culm'

From: GCIDE
  • Culm \Culm\ (k[u^]lm), n. [L. culmus stalk, stem; akin to calamus. SeeHalm.] (Bot.) The stalk or stem of grain and grasses (including the bamboo), jointed and usually hollow. [1913 Webster]

Definition of 'Culm'

From: GCIDE
  • Culm \Culm\, n. [Perh. from W. cwlm knot or tie, applied to this species of coal, which is much found in balls or knots in some parts of Wales: cf. OE. culme smoke, soot.] (Min.) (a) Mineral coal that is not bituminous; anthracite, especially when found in small masses. (b) The waste of the Pennsylvania anthracite mines, consisting of fine coal, dust, etc., and used as fuel. -- Raymond. [1913 Webster]