Source : Webster's Revised Unabridged Dictionary (1913)

Columned \Col"umned\, a.
   Having columns.

         Troas and Ilion's columned citadel.      --Tennyson.

Source : WordNet®

columned
     adj : having or resembling columns; having columns of a specified
           kind (often used as a combining form); "a columned
           portico"; "trees with columned trunks"; "white-columned
           houses" [ant: {noncolumned}]