Reference meaning
blue light
Last updated
A mixture of chemicals (including nitre, sulfur and antimony) used in the eighteenth and nineteenth centuries for night-time signaling and general illumination.
Other meanings
2. noun
A New England federalist, who opposed the Anglo-American War of 1812; (loosely), a federalist.
3. noun
A flashing light, usually fitted to an emergency vehicle.
4. noun
Used other than figuratively or idiomatically: see blue, light.
Source and scope
This definition is reproduced from English Wiktionary, sense en-blue_light-en-noun-b99xvFw3, under the CC BY-SA 4.0. It has not yet received VocabularyBase editorial review. Read the source and license details.