| Answer | Crossword Clue |
|---|---|
| oiltight | constructed to be impervious to oil |
| earthenware | Pottery made of clay fired to a porous state that can be made impervious to liquids by the use of a glaze |
| coude | of, relating to, or being a telescope constructed so that the light is reflected along the polar axis to come to a focus at a point where the holder for a photographic plate or a spectrograph may be mounted |
| oilproof | impervious to oil |
