The American Heritage® Dictionary of the English Language, 4th Edition
n. A contagious bacterial skin infection, usually of children, that is characterized by the eruption of superficial pustules and the formation of thick yellow crusts, commonly on the face.
n. A contagious bacterial skin disease forming pustules and yellow crusty sores, chiefly on the face and hands. It is common in children and infection is often through cuts or insect bites.
the GNU version of the Collaborative International Dictionary of English
n. A cutaneous, pustular eruption, not attended with fever; usually, a kind of eczema with pustulation.
The Century Dictionary and Cyclopedia
n. In med.,a name formerly given to various pustular eruptions, and at present usually retained in the designation of two diseases, impetigo contagiosa and impetigo herpetiformis.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a very contagious infection of the skin; common in children; localized redness develops into small blisters that gradually crust and erode
Word Usage
"But you can also have impetigo, which is a staph or strep skin infection, which can be treated with antibiotics."