| Answer | Crossword Clue |
|---|---|
| flashes | convey by means of flashes of light |
| heliograph | an apparatus for signalling by means of a movable mirror which reflects flashes of sunshine / to signal by heliograph |
| pipe | to convey by means of a hollow cylinder |
| pipes | PIPE, to convey by means of a hollow cylinder |
| piped | PIPE, to convey by means of a hollow cylinder |
| syphoning | Draw off or convey (liquid) by means of a siphon |
| syphoned | Draw off or convey (liquid) by means of a siphon |
| siphoning | Draw off or convey (liquid) by means of a siphon |
