Wordnet 3.0
ADJECTIVE (1)
1. 
 having or resembling columns; 
 having columns of a specified kind (often used as a combining form); 
- Example: "a columned portico"- Example: "trees with columned trunks"- Example: "white-columned houses"
The Collaborative International Dictionary of English v.0.48:
Columned \Col"umned\, a.
   Having columns.
   [1913 Webster]
         Troas and Ilion's columned citadel.      --Tennyson.
   [1913 Webster]
WordNet (r) 3.0 (2006):
columned
    adj 1: 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, uncolumned]