Source : Webster's Revised Unabridged Dictionary (1913)

Unlade \Un*lade"\ v. t. [1st un- + lade.]
   1. To take the load from; to take out the cargo of; as, to
      unlade a ship or a wagon.

            The venturous merchant . . . Shall here unlade him
            and depart no more.                   --Dryden.

   2. To unload; to remove, or to have removed, as a load or a
      burden; to discharge.

            There the ship was to unlade her burden. --Acts.
                                                  xxi. 3.