SIGNAL
| Date | Clue |
|---|---|
| 2026-03-29 | Cue |
| 2025-06-23 | Encrypted messaging software |
| 2022-07-07 | Yawn, for wanting guests to leave |
| 2022-05-06 | Traffic light |
| 2015-12-13 | A wink or a nod, maybe |
| 2011-02-16 | Wink, e.g. |
| 2010-07-28 | Prepare to turn |
| 2007-04-02 | Cue |
| 2004-05-09 | Pair of lamps, maybe |
| 2004-02-08 | Wave, e.g. |
| 2003-06-13 | Flag, maybe |
| 2003-05-28 | Nod, at auctions |
| 1998-06-03 | A wink or a nod, say |
| 1994-08-11 | Use a heliograph |