Noun | 1. | ![]() fungus - an organism of the kingdom Fungi lacking chlorophyll and feeding on organic matter; ranging from unicellular or multicellular organisms to spore-bearing syncytia family Helvellaceae, Helvellaceae - family of false morels or lorchels; some are edible and some are poisonous helvella - any fungus of the genus Helvella having the ascocarps stalked or pleated or often in folds discina - any fungus of the genus Discina |