| Frosty's pipe material |
| Bagpipers' refusals |
| Sports org. whose first champ was the Pittsburgh Pipers |
| Bagpipes noise |
| Angled pipes |
| Right-angle pipe joint |
| Pipe dream |
| Angled pipe |
| Pipes |
| Smokestack emission |
| Alpha particle's emission |
| Pipe smoker's plug |
| Church instrument without pipes |
| Remnant in a smoker's pipe |
| Ornate tobacco pipes (var.) |
| Additives to improve the smell of auto emissions? |
| Partially burned pipe tobacco |
| Angled pipe fitting |
| Double-curve pipe shape |
| U.S. emissions controller |
| Bagpipe emission |
| Pipe residues |
| Pipe-fitter's union? |
| Low-emission transport? |
| Totally exhausted |
| Clears of vermin, as the Pied Piper |
| Light amplification by stimulated emission of radiation |
| Biggest pipe in a stable? |
| Emissions from a garden sprinkler? |
| Peace pipes |