1. hybrid animals that are the offspring of a male donkey and a female horse
2. backless shoes or slippers that can be slipped on easily
3. people who smuggle drugs by carrying them in their bodies or luggage
Usage: informal; criminal context

Examples

• The farmer used mules to carry heavy loads up the mountain trail.
• Mules are known for being sturdy and sure-footed animals.
• She slipped on her comfortable mules before going to the garden.
• The leather mules were perfect for quick trips outside.
• Airport security arrested several suspected drug mules.
• The cartel recruited mules to transport narcotics across the border.
• Pack mules have been used for transportation in remote areas for centuries.