(名詞/可數) 超大的野火 － 燒毀超過 100 萬英畝 (405,000 公頃) 土地的野火或森林大火。
引句：
What initially began as 37 separate fires caused by lightning strikes came together to form California’s first gigafire, a term used to describe fires that burn at least a million acres of land. The gigafire ranks at the top of the state’s five largest wildfires in modern history, all in one year.
[laist.com, 5 October, 2022]
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