We found 11 dictionaries that define the word signal light:

General (9 matching dictionaries)

1. signal light: Vocabulary.com
2. signal-light: Wordnik
3. Signal light: InfoVisual Visual Dictionary
4. signal light: Dictionary.com
5. Signal light: Wikipedia, the Free Encyclopedia
6. signal light: Rhymezone
7. signal light: FreeDictionary.org
8. signal light: Mnemonic Dictionary
9. signal light: TheFreeDictionary.com

Computing (1 matching dictionary)

10. signal light: Encyclopedia

Tech (1 matching dictionary)

11. AUTOMOTIVE TERMS (No longer online)

(Note: See signal_lights as well.)

Definitions from WordNet (signal light) ▸ noun:  a fire set as a signal Opposite: stop light, red light, traffic light, warning light ▸ Words similar to signal light ▸ Usage examples for signal light ▸ Idioms related to signal light ▸ Wikipedia articles (New!) ▸ Words that often appear near signal light ▸ Rhymes of signal light ▸ Invented words related to signal light