tarmac-adam

tarmacadam

[tahr-muh-kad-uhm]
noun
a paving material consisting of coarse crushed stone covered with a mixture of tar and bitumen.

Origin:
1880–85; tar1 + macadam

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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WordNet
tarmacadam

noun
1. a paving material of tar and broken stone; mixed in a factory and shaped during paving 
2. a paved surface having compressed layers of broken rocks held together with tar 
WordNet® 3.0, © 2006 by Princeton University.
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