An asexual reproductive structure, as found in animals such as hydra (genus Hydra) and plants such as liverworts (division Marchantiophyta), consisting of a cluster of cells from which new individuals can develop; a bud.
Anything like a pustule, on plants or animals; a small blister.
A small accumulation of pus in the epidermis or dermis.
A pimple filled with pus.