| Underground burial chamber |
| A poetry form/With seventeen syllables/And only three lines |
| Throwaway lines |
| American Airlines Arena team |
| Lines on a radar screen |
| Pioneering underground publication of the 1960s |
| Its symbol is a "Y" with two horizontal lines through it |
| Paris underground system |
| Add soundtrack lines to |
| Lines on the Antiquity of Microbes," a.k.a. "Fleas," in its entirety (world's shortest poem?) |
| Japan Airlines rival |
| About 600 miles of underground passages near Rome |
| Ancient underground tunnel |
| Greeting mouthed from the sidelines |
| Despotic felines? |
| One of the founders of the underground comix movement: 2 wds. |
| Paris underground |
| Trains underground |
| Lines of reasoning that go nowhere |
| Disciplines |
| Lines on A.A.A. maps |
| Aegean Airlines hub, on itineraries |
| Felines |
| Outlines |
| Sporting event that misses newspaper deadlines |
| Adventurers' outlines? |
| Pattern of six horizontal lines found in the I Ching |
| Underground" director Kusturica |
| One trying to stay between the lines? |
| Coffin of the Underground Railroad |