The Collaborative International Dictionary of English v.0.48:

Column \Col"umn\, n. [L. columna, fr. columen, culmen, fr.
   cellere (used only in comp.), akin to E. excel, and prob. to
   holm. See Holm, and cf. Colonel.]
   1. (Arch.) A kind of pillar; a cylindrical or polygonal
      support for a roof, ceiling, statue, etc., somewhat
      ornamented, and usually composed of base, shaft, and
      capital. See Order.
      [1913 Webster]

   2. Anything resembling, in form or position, a column in
      architecture; an upright body or mass; a shaft or obelisk;
      as, a column of air, of water, of mercury, etc.; the
      Column Vend[^o]me; the spinal column.
      [1913 Webster]

   3. (Mil.)
      (a) A body of troops formed in ranks, one behind the
          other; -- contradistinguished from line. Compare
          Ploy, and Deploy.
      (b) A small army.
          [1913 Webster]

   4. (Naut.) A number of ships so arranged as to follow one
      another in single or double file or in squadrons; -- in
      distinction from "line", where they are side by side.
      [1913 Webster]

   5. (Print.) A perpendicular set of lines, not extending
      across the page, and separated from other matter by a rule
      or blank space; as, a column in a newspaper.
      [1913 Webster]

   6. (Arith.) A perpendicular line of figures.
      [1913 Webster]

   7. (Bot.) The body formed by the union of the stamens in the
      Mallow family, or of the stamens and pistil in the
      orchids.
      [1913 Webster]

   8. (Print.) one of a series of articles written in a
      periodical, usually under the same title and at regular
      intervals; it may be written and signed by one or more
      authors, or may appear pseudonymously or anonymously, as
      an editorial column. "Safire's weekly column On Language
      in the New York Times is usually more interesting (and
      probably more accurate) than his political column." --P.
      Cassidy
      [PJC]

   Attached column. See under Attach, v. t.

   Clustered column. See under Cluster, v. t.

   Column rule, a thin strip of brass separating columns of
      type in the form, and making a line between them in
      printing.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cluster \Clus"ter\, v. t.
   To collect into a cluster or clusters; to gather into a bunch
   or close body.
   [1913 Webster]

         Not less the bee would range her cells, . . .
         The foxglove cluster dappled bells.      --Tennyson.
   [1913 Webster]

         Or from the forest falls the clustered snow. --Thomson.
   [1913 Webster]

   Clustered column (Arch.), a column which is composed, or
      appears to be composed, of several columns collected
      together.
      [1913 Webster]