The Collaborative International Dictionary of English v.0.48:

Loof \Loof\, v. i. (Naut.)
   See Luff.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Loof \Loof\ (l[=oo]f), n. (Bot.)
   The spongelike fibers of the fruit of a cucurbitaceous plant
   (Luffa Aegyptiaca); called also vegetable sponge.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Loof \Loof\ (l[=oo]f or l[u^]f; 277), n. [See Luff.] [Also
   written luff.] (Naut.)
   (a) Formerly, some appurtenance of a vessel which was used in
       changing her course; -- probably a large paddle put over
       the lee bow to help bring her head nearer to the wind.
   (b) The part of a ship's side where the planking begins to
       curve toward bow and stern.
       [1913 Webster]