| Hand signal users |
| Distress signal |
| Airborne distress signal |
| Signal |
| All systems go" signals |
| Castaway's signal |
| Electronic signal weakener |
| Gadget for sharing a TV signal |
| Broadcasting signal |
| Acting signals |
| Air signal devices |
| A bell might signal the last one |
| Isn't blocked, as a signal |
| A signal horn |
| Navy signal pennant |
| Actress' signal |
| Air-raid signal |
| Communication syst. with hand signals |
| Loud warning signal |
| Signalling device (for a wasp, perhaps) |
| Signal-fire |
| Alias signaler |
| Kind of signal |
| Old North Church signal |
| Kitchen timer signal |
| Signaled incorrectly, as an actor |
| Smartphone signal problem? |
| Call-waiting signal |
| Choreographer's signals to get off the stage? |
| TV signal transmitters: abbr. |