The Collaborative International Dictionary of English v.0.48:

Skiff \Skiff\, n. [F. esquif, fr. OHG. skif, G. schiff. See
   Ship.]
   A small, light boat.
   [1913 Webster]

         The pilot of some small night-foundered skiff.
                                                  --Milton.
   [1913 Webster]

   Skiff caterpillar (Zool.), the larva of a moth (Limacodes
      scapha); -- so called from its peculiar shape.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Skiff \Skiff\, v. t. [imp. & p. p. Skiffed; p. pr. & vb. n.
   Skiffing.]
   To navigate in a skiff. [R.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

skiff
    n 1: any of various small boats propelled by oars or by sails or
         by a motor