| Answer | Crossword Clue |
|---|---|
| CREST | Highest part of a wave |
| NODE | Part of a wave |
| CRIME | Part of a dangerous wave |
| ANTINODE | Part of a radio wave |
| CANTO | Highest vocal part of a song |
| royalmast | the highest part of a mast |
| royalmasts | ROYALMAST, the highest part of a mast |
| headwater | the highest part of a stream or river before receiving tributaries |
| headwaters | HEADWATER, the highest part of a stream or river before receiving tributaries |
| mastheads | The highest part of a ship's mast or of the lower section of a mast |
