(Mỹ) thanh niên lập dị (vào khoảng nửa sau thập kỷ 1960)
noun
also hippy , pl -pies
[count] :a usually young person who rejects established social customs (such as by dressing in an unusual way or living in a commune) and who opposes violence and war especially; :a young person of this kind in the 1960s and 1970s