backlash
/ˈbæklæʃ/noun
1
- in sing. a strong and adverse reaction by a large number of people, especially to a social or political development（尤指人们对社会或政治动向的）强烈反对：
a public backlash against racism.
公众对种族主义的强烈反对。
2
- mass noun recoil arising between parts of a mechanism（机械的）反冲; 反作用。
2.1
- degree of play between parts of a mechanism（机械部件间的）间隙, 游隙; 轮齿隙。