| Answer | Crossword Clue |
|---|---|
| waterline | pipe, hose, tube, or other line for conveying water |
| aqueduct | a pipe or channel for conveying water |
| aqueducts | AQUEDUCT, a pipe or channel for conveying water |
| flues | pipe for conveying flame and hot gases around or through water in a steam boiler |
| flue | pipe for conveying flame and hot gases around or through water in a steam boiler |
| ductal | pipe or tubular runway for carrying an electric power line, telephone cables, or other conductors |
