Definition of "blacktop" [blacktop]

• A bituminous material, such as asphalt, used to pave roads. (noun)
• To pave with a bituminous material. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "She said that blacktop is about 20 degrees warmer than regular pavement."
• "Macadam (a material fashioned from coal slag and coil that we know as blacktop) was developed in Scotland."
• "Asphalt, also known as blacktop, is derived from crude oil, and its cost has been rising so far and fast that it is busting some highway construction and maintenance budgets."