| PLUMES | Curling columns of smoke (6) |
| WISPS | Thin columns of smoke |
| SIGNAL | Tall column of smoke on a deserted isle, e.g. |
| STACKS | Heaps of hay; piles of firewood; vertical columns of sea rock; or, shelving units in libraries (6) |
| GUTTER | Space between two facing pages of an open book, columns of type or stamps in a pane; a duct for diverting rainwater; or, a channel at either side of a bowling alley (6) |
| BASALT | Forming the coastal columns of the Giant's Causeway in Northern Ireland, a type of igneous rock that was used to make neolithic ground stone tools (6) |
| SHAFTS | Columns, of light say (6) |
| FRIEZE | Strip getting columns of support (6) |
| GEYSER | A hot spring in which water intermittently boils, sending columns of steam into the air (6) |
| PLUME | Feather; column of smoke |
| WISP | Thin column of smoke |
| NINTHS | The rows or columns of a sudoku puzzle, e.g. |
| REGLET | Word, from French for "little rule", for a column of a page originally, later a narrow band separating mouldings; a fillet; or, a strip of wood for making white spaces between type in printing (6) |
| PILING | Column, of concrete perhaps, driven into the ground to provide support (6) |
| ALKALI | Any element in the first column of the periodic table, except hydrogen |
| THREE | First digit of this puzzle's subject, whose next four digits are the number of rows and then columns of the grid |
| TORNADOES | Violent wind storms consisting of tall columns of air that spin round fast (9) |
| GROUP | Any one of the 18 elemental columns of the periodic table (5) |
| THERMALS | Columns of rising air caused by the heating of the land surface (8) |
| HERRINGBONE | Pattern consisting of columns of parallel lines, with all the lines in one column sloping one way and all the lines in the next column sloping the other (11) |
