[1] : The Collaborative International Dictionary of English v.0.48

gaff \gaff\ ga^f, n. oe. gaffe, f. gaffe an iron hook with
   which seamen pull great fishes into their ships; cf. ir. gaf,
   gafa hook; perh. akin to g. gabel fork, skr. gabhasti. cf.
   gaffle, gable.
   1. a barbed spear or a hook with a handle, used by fishermen
      in securing heavy fish.
      1913 webster

   2. naut. the spar upon which the upper edge of a
      fore-and-aft sail is extended.
      1913 webster

   3. same as gaffle, 1. --wright.
      1913 webster
see also:
gaffle gable 

[2] : The Collaborative International Dictionary of English v.0.48

gaff \gaff\, v. t. imp.  p. p. gaffed; p. pr.  vb. n.
   gaffing.
   to strike with a gaff or barbed spear; to secure by means of
   a gaff; as, to gaff a salmon.
   1913 webster
see also:
gaffed gaffing 

[3] : WordNet (r) 2.0

gaff
     n 1: a spar rising aft from a mast to support the head of a
          quadrilateral fore-and-aft sail
     2: an iron hook with a handle; used for landing large fish

Gaff >> G Words
Gaff, definition of term: Gaff
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