horse blanket n. a large, complex, or comprehensive report or chart. Etymological Note: Probably derives from a size comparison of sheets of chart paper to actual horse blankets. (source: Double-Tongued Dictionary)
Further reading
What does a printed period look like under a microscope? In 1665, English scientist Robert Hooke answered that question in his book Micrographia (Bookshop\|Amazon), a bestseller that showed the unseen world. Hooke had trained as an artist, and his...
Dylan from Charlottesville, Virginia, was rock climbing at his brother’s bachelor party when he heard other climbers called gumbies. Dylan figured that a gumby must be the kind of beginner or overconfident participant whose skills don’t...