VisualLang
[press|hammer] {sth} home
to forcefully make a point in an argument or discussion to ensure that there are no misunderstandings
The idiom "press something home" is thought to have originated in the 17th century, and it is a metaphor based on the physical act of using a hammer to drive a nail into a piece of wood. This expression is often used in the context of teaching or persuasion to describe the act of forcing an idea or message into someone's mind.
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