| Answer | Crossword Clue |
|---|---|
| PIN | Number used by many |
| TEN | Number used to mean several, many. |
| NINER | Number used by pilots |
| BASESIXTY | Number system used by the Babylonians |
| ETRADE | Company used by many on-line investors |
| INVISIBLEINK | It's used by many a junior spy |
| LITEFM | Phrase used by many easy-listening radio stations |
| ANDRO | Bodybuilding drug used by many home run hitters in the '90s |
