Learner's definition of HIPPIE
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
a young person of this kind in the 1960s and 1970s
She used to be a hippie, but she's fairly conservative now.
an old/aging hippie [=an old person who still lives like the hippies of the 1960s and 1970s]
The band appeals to a new generation of hippies.
— often used before another noun