1. to force someone to leave a school, organization, or group as punishment
2. to force air, liquid, or other substance out of the body or from a container
3. to force someone to leave a place or country

Examples

• The student was expelled from school for cheating on the exam.
• Three members were expelled from the club for breaking the rules.
• She expelled the air from her lungs slowly during the breathing exercise.
• The volcano expelled ash and smoke into the atmosphere.
• The government expelled the foreign diplomats after the incident.
• He was expelled from the country for illegal activities.
• The machine expels waste products through a special filter.