[smohk-stak] 
| 1. | Also called stack. a pipe for the escape of the smoke or gases of combustion, as on a steamboat, locomotive, or building. |
| 2. | pertaining to, engaged in, or dependent on a basic heavy industry, as steel or automaking: smokestack companies. |
| smoke·stack (smōk'stāk') n. A large chimney or vertical pipe through which combustion vapors, gases, and smoke are discharged. adj. Of, relating to, or being firms, industries, or places involved in heavy manufacturing or in the processing of materials: smokestack industries such as steel and iron. |
