| Answer | Crossword Clue |
|---|---|
| POLARCAP | High-latitude formation |
| HELSINKI | High-latitude capital |
| CIRRUSCLOUD | High-altitude formation |
| VEE | Migratory formation on high |
| ALP | High mountain, in a certain back-formation |
| shockstall | (Aeronautics) a loss of lift at high speed caused by the formation of shock waves |
| shockstalls | SHOCKSTALL, (Aeronautics) a loss of lift at high speed caused by the formation of shock waves |
