| 1 | He flicked at spot with handkerchief. | |
| 2 | I examine a stain on the tile ceiling. | |
| 3 | His involvement in the scandal was a blot on his reputation. | |
| 4 | Please tell us about the stains before the dry-cleaning next time. | |
| 5 | It will remain an indelible stain on his memory. |