| Answer | Crossword Clue |
|---|---|
| ULLAGE | Amount needed to fill a cask |
| ULLAGE | Amount needed to make a full cask |
| ULLAGE | Amount lacking to make a full cask |
| TEASPOON | One of about 500 million needed to fill an Olympic swimming pool |
| MILLIHELEN | Facetious unit defined as the amount of beauty needed to launch one ship |
