1540s, "spread out" (hair), of unknown origin, perhaps from Scandinavian or from Dutch vlederen. Meaning "shine out with a sudden light" is from 1630s. The notion of "spreading out in display" is behind the notion of "spreading gradually outward" (1640s). Related: Flared; flaring.
flare (n.)
"a giving off of a bright, unsteady light," 1814, from flare (v.). This led to the sense of "signal fire" (1883). The astronomy sense is from 1937. Meaning "a gradual widening or spreading" is from 1910; hence flares "flared trousers" (1964).
实用例句
1. Don'tspill too much fat on the barbecue as it could flare up.
不要在烤肉上浇太多的油，会烧起来的。
来自柯林斯例句
2. There's been a flare-up of violence in South Africa.
南非暴力冲突突然加剧。
来自柯林斯例句
3. a flare-up of tension between the two sides
双方剑拔弩张
来自《权威词典》
4. I saw the sudden flare of a flashlight in the darkness.
我看到手电筒在黑暗中突然闪出的亮光.
来自《简明英汉词典》
5. The flare overshot its target and set light to a hotel.
