hostaPronunciation: /ˈhɒstə/Definition of hosta noun an East Asian plant cultivated in the West for its shade-tolerant foliage and loose clusters of tubular mauve or white flowers. Genus Hosta (formerly Funkia), family Liliaceae Origin:modern Latin, named after Nicolaus T. Host (1761–1834), Austrian physicianhosta in other Oxford dictionaries Definition of hosta in the US English dictionary