1. the offspring of a male donkey and a female horse
2. a backless shoe or slipper
3. a person who smuggles drugs by carrying them in their body or luggage
Usage: informal

Examples

• The farmer used a mule to carry heavy loads up the mountain trail.
• Mules are known for being stubborn but hardworking animals.
• She slipped on her comfortable mules before going to the garden.
• The leather mules were perfect for quick trips outside.
• Airport security arrested a drug mule at customs.
• The cartel recruited locals to work as mules across the border.