blackboard jungle
noun Informal.
a school or school system characterized by lack of discipline and by juvenile delinquency.
Origin of blackboard jungle
1950–55; on the model of
asphalt jungle; popularized by the novel of the same name (1954) by American author Evan Hunter (born 1926)
Words nearby blackboard jungle
blackberry lily,
blackbird,
blackbirder,
blackbirding,
blackboard,
blackboard jungle,
blackboard learn,
blackbody,
blackbody radiation,
blackbuck,
blackburn