fungus
Definitions
Any of a kingdom of spore-producing organisms that lack chlorophyll and include molds, rusts, mildews, smuts, mushrooms, and yeasts.
A spongy, abnormal growth or excrescence, such as granulation tissue, developing on an animal body.
Examples
The damp conditions in the basement caused a patch of fungus to grow on the wooden floorboards.
Some types of fungus are edible and highly prized by chefs for their unique earthy flavor.