C3O1L1U1M3N1
10 points
COLUMN is validvalid
a vertical cylindrical support [n COLUMNS] : COLUMNAL [adj], COLUMNAR [adj], COLUMNED [adj]
a vertical cylindrical support [n -S]
a vertical cylindrical support [n COLUMNS] : COLUMNAL [adj], COLUMNAR [adj], COLUMNED [adj]
a vertical cylindrical support [n -S]