drive home
/dɹˈaɪv hˈəʊm/
/dɹˈaɪv hˈoʊm/
Etymology
Old EnglishEnglish
This phrase pictures a carpenter driving a nail all the way 'home' — that is, fully into the wood until the head sits flush. 'Drive' comes from Old English 'drifan', meaning to push or force forward, and 'home' here keeps its old sense of 'to the intended end point'. From hammering a nail in completely, English borrowed the image for forcing an idea fully into someone's mind.