Definition of "pustule" [pus•tule]

• A small inflamed elevation of the skin that is filled with pus; a pimple. (noun)
• A small swelling similar to a blister or pimple. (noun)
• Something likened to an inflamed, pus-filled lesion: "a cool glimpse of green between hot pustules of sooty sprawl” ( Nicholas Proffitt). (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "This paranoid pustule is able to find a liberal conspiracy lurking behind any mundane occurrence, even attributing Obama’s selection as Time’s Person of the Year, an event as predictable as sunrise, to a pay-to-play scheme."
• "One of the first objects then of this pursuit, as I have observed, should be, to learn how to distinguish with accuracy between that peculiar pustule which is the true cow pock, and that which is spurious."
• "One of the first objects then of this pursuit, as I have observed, should be, to learn how to distinguish with accuracy between that peculiar pustule which is the true cow-pock, and that which is spurious."