| Clue | Source | Date |
|---|---|---|
| Mental grasps (7) | ||
| Moments of comprehension, in an idiom | New York Times | 07 Sep 2024 |
| Chimney pipes | Eugene Sheffer | 28 Feb 2019 |
| Smoke-conveying pipes, e.g | USA Today | 27 Nov 2016 |
| Chimney pipes | Wall Street Journal | 06 Feb 2016 |
| Apprehensions | ||
| Flues, e.g. | ||
| Flues, e.g. | ||
| Apprehensions | ||
| Pipes leading to the roof | ||
| Flues | ||
| Pipes from a furnace to its chimney. | ||
| Ventilating shafts. |