transitive. To suppurate or bring to a head; to affect with wheals. Only in past participle suppurated, pustuled, pimpled.

transitive. To cause the formation of pus in or the discharge of pus from (an area of the body); to ripen (an abscess). In early use also: †to cause…

transitive. To cause ulceration, suppuration, or infection of (a part of the body, a wound, etc.). Occasionally also intransitive. In later use…

transitive. To cause (flesh, wounds, etc.) to fester; to make painful. Also with up. Also in figurative contexts. Obsolete.

transitive. To render (a sore) festered, to cause to rankle. Also figurative.