1. a tall chimney or pipe through which smoke and gases are discharged, especially from a factory, ship, or locomotive
2. a manufacturing industry, especially heavy industry
Usage: often used attributively

Examples

• The factory’s smokestack towered above the surrounding buildings.
• Black smoke poured from the ship’s smokestack as it left the harbor.
• The old locomotive’s smokestack belched steam into the cold morning air.
• Environmental regulations require filters on industrial smokestacks.
• The city is trying to attract smokestack industries to boost employment.
• Many smokestack companies have moved their operations overseas.
• The power plant’s smokestack was visible from miles away.