1 archaic A silly or flirtatious young woman.
- ‘a raven-haired fizgig’
2 archaic A kind of small firework.
- ‘he splutters out all his opinions like a fizgig made of gunpowder not thoroughly dry’
3Australian informal A police informer.
- ‘they relied on their ability to conduct surveillance and to establish relations with informants or fizgigs’
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