1. a person or thing that expels or forces out
2. a machine or device used to extract oil or other substances from seeds or materials by pressing or squeezing
Usage: technical; industrial

Examples

• The expeller removed the unwanted guests from the building.
• An oil expeller is used in food processing to extract oil from seeds.
• The device acts as an expeller, forcing air through the ventilation system.
• Modern expellers can process large quantities of seeds efficiently.
• The expeller mechanism in the printer ejects jammed paper automatically.