wildfire
/ˈwaɪldfaɪə(r)/noun
1
- a large, destructive fire that spreads quickly over woodland or brush野火; （迅速在林中蔓延的）烈火。
1.1
- mass noun historical a combustible liquid such as Greek fire that was readily ignited and difficult to extinguish, used especially in warfare〈史〉（旧时用于战争, 随时可以点燃, 燃烧时很难熄灭的）希腊火; 高度易燃物质, 燃烧剂。
2
- less common term for WILLO'-THE-WISP.〈较罕〉同WILL-O'-THE-WISP.
短语
spread like wildfire
- spread with great speed如野火般曼延开来, 很快传开：
the news had spread like wildfire.
消息不胫而走, 很快传开。