The Collaborative International Dictionary of English v.0.48:

Lade \Lade\ (l[=a]d), v. t. [imp. Laded; p. p. Laded,
   Laden (l[=a]d'n); p. pr. & vb. n. Lading.] [AS. hladan to
   heap, load, draw (water); akin to D. & G. laden to load, OHG.
   hladan, ladan, Icel. hla[eth]a, Sw. ladda, Dan. lade, Goth.
   afhla[thorn]an. Cf. Load, Ladle, Lathe for turning,
   Last a load.]
   1. To load; to put a burden or freight on or in; -- generally
      followed by that which receives the load, as the direct
      object.
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            And they laded their asses with the corn. --Gen.
                                                  xlii. 26.
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   2. To throw in or out, with a ladle or dipper; to dip; as, to
      lade water out of a tub, or into a cistern.
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            And chides the sea that sunders him from thence,
            Saying, he'll lade it dry to have his way. --Shak.
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   3. (Plate Glass Manuf.) To transfer (the molten glass) from
      the pot to the forming table.
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The Collaborative International Dictionary of English v.0.48:

Lading \Lad"ing\, n.
   1. The act of loading.
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   2. That which lades or constitutes a load or cargo; freight;
      burden; as, the lading of a ship.
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   Bill of lading. See under Bill.
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WordNet (r) 3.0 (2006):

lading
    n 1: goods carried by a large vehicle [syn: cargo, lading,
         freight, load, loading, payload, shipment,
         consignment]

Moby Thesaurus II by Grady Ward, 1.0:

82 Moby Thesaurus words for "lading":
   allocation, assignment, baggage, bale, bellyful, bumper, burden,
   burdening, burthen, capacity, cargo, carload, cartload, charge,
   charging, collocation, complement, consignment, cram, crush,
   cumber, cumbrance, deadweight, deployment, deposit, deposition,
   disposition, drag, emplacement, encumbrance, fill, freight,
   freightage, full house, full measure, goods, handicap, haul,
   impedimenta, incubus, incumbency, jam up, load, loading,
   localization, locating, location, luggage, millstone, mouthful,
   oppression, overload, overtaxing, overweighting, pack, packing,
   payload, pinpointing, placement, placing, positioning, posting,
   pressure, putting, reposition, saddling, shipload, shipment,
   situation, skinful, snootful, spotting, stationing, storage,
   stowage, superincumbency, surcharge, taxing, trailerload,
   trainload, truckload, vanload