1. tall chimneys or pipes that discharge smoke and gases from factories, power plants, or ships

Examples

• The factory’s smokestacks released thick clouds of steam into the sky.
• Environmental regulations require filters on industrial smokestacks.
• The old power plant had three massive smokestacks visible from miles away.
• Ship smokestacks were painted bright colors to identify different shipping companies.
• The city skyline was dominated by the smokestacks of steel mills.
• Workers climbed the smokestacks to perform routine maintenance.