From The Collaborative International Dictionary of English v.0.48:
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.
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The venturous merchant . . .
Shall here unlade him and depart no more. --Dryden.
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2. To unload; to remove, or to have removed, as a load or a
burden; to discharge.
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There the ship was to unlade her burden. --Acts.
xxi. 3.
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