multiwall

adjective

mul·​ti·​wall ˌməl-tē-ˈwȯl 

-ˌtī-

: having a wall composed of multiple layers

multiwall nanotubes

It also offers specialty paper products … such as multiwall paper used to produce bags for agricultural products, pet food, baking products, cement and chemicals …

—Anthony Miller

Word History

First Known Use

1926, in the meaning defined above