mousetrap

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build a better mousetrap

To invent something that improves upon an existing object or concept. You don't have to try so hard to build a better mousetrap—just design what interests you and see what happens.
See also: better, build, mousetrap

build a better mousetrap

to develop or invent something superior to a device that is widely used. (From the old saying, "If you build a better mousetrap, the world will beat a path to your door.") Harry thought he could build a better mousetrap, but everything he "invented" had already been thought of.
See also: better, build, mousetrap

a better mousetrap

an improved version of a well-known article.
This expression comes from an observation attributed to Ralph Waldo Emerson in 1889 , though also claimed by Elbert Hubbard : ‘If a man write a better book, preach a better sermon, or make a better mousetrap than his neighbour, tho' he build his house in the woods, the world will make a beaten path to his door’.
See also: better, mousetrap