From Longman Dictionary of Contemporary Englishdrum something into somebody phrasal verbTELL/ORDER somebody TO DO somethingto keep telling someone something until they cannot forget it ‘Don’t talk to strangers’ is a message drummed into children. → drum→ See Verb table
Examples from the Corpus
drum into • The master is placed on a drum and comes into contact with damp rollers then ink rollers.• Jones drummed old-time learning into his chosen corps and, in March 1937, Richard sat the scholarship and passed it.• He'd given up trying to drum his fingers into his thigh.• What notes were these anyway banged out on a pan, petrol drums forged into spinets and harpsichords?• Ultimately the wooden drum was transmuted into the body of the membrane drum.• You have to drum it into them.• Shock tactics to drum safety into young drivers. 