1. cop on - Noun
2. cop on - Verb
cop on
(Ireland, informal, idiomatic) Common sense.
That eejit has no cop on.
(Ireland, informal, idiomatic) To stop behaving immaturely; behave, grow up.
You'll get in trouble with the boss if you don't cop on.
(Ireland, informal, UK, dialect) To come to understand; twig, cotton on.
Source: en.wiktionary.orgThe Violence Against Women Act is so important. It provides money to train the cop on the beat, to train the judges that this is a new day, that we won't tolerate this violence and to know how to deal with it. Patricia Ireland