| Answer | Crossword Clue |
|---|---|
| opisthographies | OPISTHOGRAPHY, inscribing on the back as well as the front |
| opisthography | inscribing on the back as well as the front |
| opisthographic | like an opisthograph, a manuscript or slab inscribed on the back as well as the front |
| headsprings | A somersault similar to a handspring, except that the performer lands on the head as well as the hands |
| headspring | A somersault similar to a handspring, except that the performer lands on the head as well as the hands |
| sins | gyroscopic device indicating the exact speed and position of a vessel, as indicated by differences in positions over a given period on a given course, as well as the direction of true north |
