flanker

基本解释

The Advanced Front-Line Aviation Complex (PAK FA) plane is set to replace the Air Force's fourth-generation fighters, namely, the Su-27 Flanker and the MiG-29 Fulcrum.
这架PAK FA（未来战术航空飞机系统）飞机将取代俄罗斯空军的第四代战斗机，即苏-27侧卫飞机和米格-29支点飞机。
www.etiri.com.cn
A team of researchers from laboratories in America, Britain, Germany and Norway used an imaging machine to scan the brains of a group of volunteers who were set a “flanker” test.
一组来自美国，英国，德国和挪威实验室的研究人员利用成像仪扫描一群志愿者的大脑，这些志愿者正被进行一个叫边锋的测试。
The military official said the Navy was currently using MiG-29K carrier-based multirole fighters and the more advanced Su-33 (Flanker-D) fighters, which will subsequently replace the MiGs.
军方官员表示，海军目前使用的米格-29K舰载多用途战斗机以及更先进的苏-33（Flanker-D）战机，以后将取代米格战斗机。
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in rugby, one of two attacking players who hold onto the sides of a scrum (= a group of attacking players from each team who come together with their heads down and arms joined, and push against each other)

one of a detachment of soldiers detailed to guard the flanks, esp of a formation