| Leuchtsignal | flare |
| Rauchsignal | smoke signal |
| Leuchtgas | illuminating gas |
| Leuchtkugel | flare |
| Leuchtmittel | illuminant |
| Leichtsinn | carelessness |
| leichtsinnig | careless devil-may-care frivolous lightheaded |
| Leuchtfackel | flare |
| Leuchtpistole | flare gun |
| leuchtend | lucid |
| Leuchtdiode | light emitting diode |
| Leuchten | brilliance luminescence radiance |
| leuchten | shine |
| Lichtsegel | light sail |
| Rechtecksignal | square wave |
| leichthin | hands down |
| Leichtfigur | minor piece |
| achtzigmal | eighty times |
| Taktsignal | clock |
| Leuchtfeuer | beacon lighthouse |