| GULLY | Small ravine or valley cut by running rainwater; or, a channel or gutter at either side of a tenpin bowling lane or skittles alley (5) |
| 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) |
| GORGE | Ravine or valley cut in steep rocks (5) |
| DRIP | Projecting edge of a roof, designed to channel rainwater; or, an apparatus for administering fluids, nutrients or drugs intravenously (4) |
| GILL | A respiratory organ of a fish; a female ferret; or, a small ravine (4) |
| RILL | Shallow channel cut by running water (4) |
| GULLEY | Ditch cut by running water (6) |
| RUNNEL | Small stream or gutter (6) |
| STRAND | A rivulet or gutter (6) |
| GULCH | Small ravine |
| SPASMS | Male trapped in small ravine twitches |
| RHONE | Hen or gutter (5) |
| DEN | A cave, lair or valley; a secret hideout; a private room for study or relaxation; or, a haunt of iniquity (3) |
| RACE | From the Old Norse meaning "current", a word originally for a rapid forward movement, later a channel or a contest of speed (4) |
| RAVINE | A deep narrow gorge or valley worn by a stream or torrent of water (6) |
| HOBS | Male ferrets; the tops of some cookers with hotplates; shelves at either side of open fireplaces; or, pegs used as targets in quoits (4) |
| ANTA | A square pilaster at either side of a doorway, etc (4) |
| PALATINETONSIL | Mass of lymphoid tissue at either side of the back of the throat |
| ALCOVE | Recess or inglenook at either side of a chimneybreast, often used for bookshelves (6) |
| WINDGAP | A valley cut through a ridge by a river that has run dry (4,3) |
