| Answer | Crossword Clue |
|---|---|
| PSI | Letters on an air pump |
| PRESSURE | Word on an air pump |
| PSI | Air-pump letters |
| PSI | Air pump letters |
| vacuums | space partially exhausted (as to the highest degree possible) by artificial means (as an air pump) |
| vacua | space partially exhausted (as to the highest degree possible) by artificial means (as an air pump) |
| spirophore | an apparatus for inducing artificial respiration by means of an airtight case for the body and an air pump |
| spirophores | SPIROPHORE, an apparatus for inducing artificial respiration by means of an airtight case for the body and an air pump |
