™ / ˈtɑːmæk; NAmE ˈtɑːrmæk/ noun [ U ]
1.
(also less frequent tar·mac·adam / ˌtɑːməˈkædəm; NAmE ˌtɑːrm-/) ( NAmE also black·top ) a black material used for making road surfaces, that consists of small stones mixed with tar
2.
the tarmac an area with a Tarmac surface, especially at an airport :
Three planes were standing on the tarmac, waiting to take off.
For more information see the Cultural Guide