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general::
Phrase(s): hammer something into something [and] pound something into something; hammer something in; pound something in
Lit. to drive something into something as with a hammer. • Todd hammered the spike into the beam. • He hammered in the spike. • He hammered it in with two hard blows., Phrase(s): hammer something into someone [and] pound something into someone; hammer someone in; pound someone in
Fig. to teach something to someone intensively, as if one were driving the information in by force. • Her parents had hammered good manners into her head since she was a child. • They hammered in good manners every day. • They pounded proper behavior into the children.
McGrawhill's American Idioms And Phrasal Verbs