The Collaborative International Dictionary of English v.0.48:

Boat \Boat\ (b[=o]t), v. t. [imp. & p. p. Boated; p. pr. & vb.
   n. Boating.]
   1. To transport in a boat; as, to boat goods.
      [1913 Webster]

   2. To place in a boat; as, to boat oars.
      [1913 Webster]

   To boat the oars. See under Oar.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Boat \Boat\ (b[=o]t), n. [OE. boot, bat, AS. b[=a]t; akin to
   Icel. b[=a]tr, Sw. b[*a]t, Dan. baad, D. & G. boot. Cf.
   Bateau.]
   [1913 Webster]
   1. A small open vessel, or water craft, usually moved by cars
      or paddles, but often by a sail.
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   Note: Different kinds of boats have different names; as,
         canoe, yawl, wherry, pinnace, punt, etc.
         [1913 Webster]

   2. Hence, any vessel; usually with some epithet descriptive
      of its use or mode of propulsion; as, pilot boat, packet
      boat, passage boat, advice boat, etc. The term is
      sometimes applied to steam vessels, even of the largest
      class; as, the Cunard boats.
      [1913 Webster]

   3. A vehicle, utensil, or dish, somewhat resembling a boat in
      shape; as, a stone boat; a gravy boat.
      [1913 Webster]

   Note: Boat is much used either adjectively or in combination;
         as, boat builder or boatbuilder; boat building or
         boatbuilding; boat hook or boathook; boathouse; boat
         keeper or boatkeeper; boat load; boat race; boat
         racing; boat rowing; boat song; boatlike; boat-shaped.
         [1913 Webster]

   Advice boat. See under Advice.

   Boat hook (Naut.), an iron hook with a point on the back,
      fixed to a long pole, to pull or push a boat, raft, log,
      etc. --Totten.

   Boat rope, a rope for fastening a boat; -- usually called a
      painter.

   In the same boat, in the same situation or predicament.
      [Colloq.] --F. W. Newman.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Boat \Boat\, v. i.
   To go or row in a boat.
   [1913 Webster]

         I boated over, ran my craft aground.     --Tennyson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

boat
    n 1: a small vessel for travel on water
    2: a dish (often boat-shaped) for serving gravy or sauce [syn:
       gravy boat, gravy holder, sauceboat, boat]
    v 1: ride in a boat on water

Moby Thesaurus II by Grady Ward, 1.0:

151 Moby Thesaurus words for "boat":
   almadia, argosy, ark, auto, autocar, automobile, auxiliary, barge,
   bark, bottom, bucket, buggy, bus, buss, canoe, car, cargo boat,
   carry sail, cart, cat, catamaran, circumnavigate, coach, coast,
   cockle, cockleshell, cog, coracle, craft, crate, cross, cruise,
   cruiser, cutter, dinghy, dispatch boat, dray, drifter, dugout,
   ferry, ferryboat, fishing boat, float, funny, galley, gig, glider,
   go by ship, go on shipboard, go to sea, gondola, haul, heap,
   hooker, houseboat, hoy, hulk, hull, hydrofoil, hydroplane, jalopy,
   jolly, jolly boat, kayak, keel, knockabout, launch, leviathan,
   lifeboat, lighter, longboat, machine, mailer, make a passage,
   motor, motor vehicle, motorboat, motorcar, motorized vehicle,
   navigate, outboard, outrigger canoe, packet, pilot, pilot boat,
   pinnace, piragua, pirogue, ply, pontoon, post boat, pram, punt,
   racer, racing shell, raft, randan, row, rowboat, rowing boat, run,
   runabout, sail, sail round, sail the sea, sailboat, sampan,
   scooter, scow, scull, seafare, shallop, shell, ship, showboat,
   skiff, sled, sledge, small boat, sneakbox, speedboat, steam,
   steamboat, surfboat, take a voyage, towboat, traverse, trawlboat,
   trawler, trimaran, trow, truck, tub, tug, tugboat, van, vessel,
   voiture, voyage, wagon, wanigan, watercraft, whale-gig, whaleboat,
   wheelbarrow, wheels, wherry, wreck, yacht, yawl, yawl boat