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In some senses, doorstopper is marked as humorous. Watch for register when choosing this word.
doorstopper
noun 3
Definitions
noun
1
A doorstop: a device for halting the motion of a door.
2
A large book, which by implication could be used to stop a door.
So Steven Pinker is stretching the genre with his 450-page doorstopper Enlightenment Now: A Manifesto for Science, Reason, Humanism and Progress.
3
A gauge used in geophysics.
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