loo·fah or loo·fa 
(lfə) also luf·fa (lfə, lŭfə)
(lfə) also luf·fa (lfə, lŭfə)n.
1. Any of several tropical cucurbit vines of the genus Luffa native to Asia, having cylindrical fruit with a fibrous, spongelike interior.
2. The dried, fibrous part of the loofah fruit, used as a washing sponge or as a filter. Also called dishcloth gourd, vegetable sponge.
[Arabic lūfa, singulative of lūf.]
loofahsmooth loofah
Luffa aegyptiaca