| Answer | Crossword Clue |
|---|---|
| soakaway | a depression into which water percolates |
| soakaways | SOAKAWAY, a depression into which water percolates |
| sumps | A depression in the floor of a mine or basement in which water collects |
| saltpan | an undrained natural depression in which water gathers and leaves a deposit of salt on evaporation |
| stomodaea | depression in the ectoderm of the oral region of a young embryo, which develops into the mouth and oral cavity |
| stomodea | depression in the ectoderm of the oral region of a young embryo, which develops into the mouth and oral cavity |
| stomodeal | depression in the ectoderm of the oral region of a young embryo, which develops into the mouth and oral cavity |
