loofahPronunciation: /ˈluːfə/Definition of loofah noun 1the fibrous matter of the fluid-transport system of a marrow-like fruit, which is dried and used as a bath sponge. 2the tropical Old World climbing plant of the gourd family which produces loofahs, which are also edible. Luffa cylindrica, family Cucurbitaceae Origin: late 19th century: from Egyptian Arabic lūfa, denoting the plantloofah in other Oxford dictionaries Definition of loofah in the US English dictionary