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pitch surface

noun

(in a gear or rack) an imaginary surface forming a plane (pitch plane), a cylinder (pitch cylinder), or a cone or frustrum (pitch cone) that moves tangentially to a similar surface in a meshing gear so that both surfaces travel at the same speed.

Origin:
1885–90

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Pitch surface is always a great word to know.

So is lollapalooza. Does it mean:

an extraordinary or unusual thing, person, or event; an exceptional example or instance.

a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.

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"Notwithstanding the universal barrenness, and the contiguity of the desert, I never saw an autumnal landscape so beautifully painted as this was. It was like the richest rug imaginable spread over an uneven surface; no damask nor velvet, nor Tyrian dye or stuffs, nor the work of any loom, could ever match it. There was the incredibly bright red of the huckleberry, and the reddish brown of the bayberry, mingled with the bright and living green of small pitch pines, and also the duller green of the bayberry, boxberry, and plum, the yellowish green of the shrub oaks, and the various golden and yellow and fawn-colored tints of the birch and maple and aspen, each making its own figure, and, in the midst, the few yellow sand-slides on the sides of the hills looked like the white floor seen through rents in the rug. Coming from the country as I did, and many autumnal woods I had seen, this was perhaps the most novel and remarkable sight that I saw on the Cape. Probably the brightness of the tints was enhanced by contrast with the sand which surrounded this tract."

-Henry David Thoreau

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