Luffas is a 6 letter English word. It's valid Scrabble word worth 11 points. It's valid Words with friends word worth 13 points.
You can make 55 anagrams from letters in luffas (afflsu).
No luffa has been long cultivated in China, according to a letter of Dr. Bretschneider.
Another species (luffa drastica, of Martius) is also employed for the same purpose.