| Answer | Crossword Clue |
|---|---|
| BORES | Hollow parts of pipes. |
| panpipe | primitive wind instrument consisting of a series of hollow pipes of graduated length, the tones being produced by blowing across the upper ends |
| STEMS | Parts of pipes. |
| STEMS | Parts of pipes |
| ORGANSTOPS | Parts of some church pipes |
| SOCKETS | Hollow parts |
