Definition of lightning bug in English:

lightning bug

Line breaks: light|ning bug

noun

  • North American term for firefly.
    More example sentences
    • I've thought that fire ants had killed off most of the lightning bugs like they have the horned toads.
    • The favorite ‘hangouts’ of lightning bugs are east of the Rocky Mountains and away from city lights.
    • This is a rare phenomenon in which the lightning bugs in an area flash in unison.

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Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space