Noun
A vesicle or an elevation of the cuticle with an inflamed base, containing pus.
Source: Webster's dictionaryHe distinguished 'true' and 'spurious' cowpox (which did not give the desired effect) and developed an "arm-to-arm" method of propagating the vaccine from the vaccinated individual's pustule. Source: Internet
At least I know what an "enflamed pustule" looks like; I wouldn't know what a "bubble-gum tennis shoe" was if it was inserted into my nose. Source: Internet
She pours the liquid formula on her hands and begins to dab one inflamed pustule at a time, tears forming in her eyes when she realizes resistance against the wretched eruptions is futile. Source: Internet
Inoculation, a practice probably as old as the disease itself, is the injection of the variola virus taken from a pustule or scab of a smallpox sufferer into the superficial layers of the skin, commonly on the upper arm of the subject. Source: Internet