noun
Refers to the moral standards and ethical principles expected in public life and society.
公衆道徳を守ることは、社会の一員としての責任だ。
Observing public morals is a responsibility as a member of society.
道徳 is general 'morals' or 'ethics', while 公衆道徳 specifically refers to morals in the public sphere.
Compound of 公衆 (public) and 道徳 (morals).