|Egyptian luffa with nearly mature fruit|
A luffa (also spelled loofah or loofa) is a long thin dried inner part of the fruit of a tropical plant related to the cucumber . It is often used as a sponge for washing the body. Before it gets ripe, it is also a good vegetable. It also comes from dried corn on the cob stems.
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Data related to Luffa at Wikispecies