1. small bumps on the skin containing pus, typically caused by infection or inflammation
Usage: medical; plural form of pustule

Examples

• The doctor examined the pustules on the patient’s face.
• Chickenpox causes itchy pustules to form all over the body.
• She applied antibiotic cream to treat the infected pustules.
• The dermatologist warned against picking at the pustules.
• Small pustules appeared around the insect bite.
• The medication helped clear up the pustules within a week.