NOUN (1)

1. a small canoe consisting of a light frame made watertight with animal skins; used by Eskimos;


VERB (1)

1. travel in a small canoe;
- Example: "we kayaked down the river"

The Collaborative International Dictionary of English v.0.48:

Kayak \Kay"ak\, n. (Naut.)
   A light canoe, made of skins stretched over a frame, and
   usually capable of carrying but one person, who sits
   amidships and uses a double-bladed paddle. It is peculiar to
   the Eskimos and other Arctic tribes.
   [1913 Webster]

WordNet (r) 3.0 (2006):

kayak
    n 1: a small canoe consisting of a light frame made watertight
         with animal skins; used by Eskimos
    v 1: travel in a small canoe; "we kayaked down the river"