| Answer | Crossword Clue |
|---|---|
| SST | Barrier breaker, for short |
| SST | Sound barrier breaker, for short |
| SST | Retired barrier breaker, for short |
| DOZER | Ground-breaker, for short. |
| SST | Barrier breaker |
| SST | Old barrier breaker |
| SST | Former barrier breaker |
| SST | Historic barrier breaker |
| CHUCKYEAGER | 1947 barrier breaker |
| SST | Sound barrier breaker |
| SST | Bygone barrier-breaker |
| YEAGER | Noted barrier breaker |
| SST | Frequent sound barrier breaker |
| CHUCKYEAGER | First sound-barrier breaker |
| YEAGER | 1947 sound-barrier breaker |
| SST | Sound barrier breaker: Abbr. |
| YEAGER | Sound barrier breaker Chuck |
| ROBINSON | Barrier breaker of 1947 |
| ROBINSON | Baseball barrier breaker of 1947 |
| SST | Sound-barrier breaker of yore |
