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:

Lade \Lade\, v. i. [See Lade, v. t.]
   1. To draw water. [Obs.]
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   2. (Naut.) To admit water by leakage, as a ship, etc.
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The Collaborative International Dictionary of English v.0.48:

Lade \Lade\, n. [Prov. E., a ditch or drain. Cf. Lode, Lead
   to conduct.]
   1. The mouth of a river. [Obs.] --Bp. Gibson.
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   2. A passage for water; a ditch or drain. [Prov. Eng.]
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WordNet (r) 3.0 (2006):

lade
    v 1: remove with or as if with a ladle; "ladle the water out of
         the bowl" [syn: ladle, lade, laden]
    2: fill or place a load on; "load a car"; "load the truck with
       hay" [syn: load, lade, laden, load up]

Moby Thesaurus II by Grady Ward, 1.0:

67 Moby Thesaurus words for "lade":
   bag, bail, barrel, bear hard upon, bottle, box, brim, burden,
   burthen, can, charge, chock, clog, congest, cram, crate, crowd,
   cumber, dip, encumber, fill, fill to overflowing, fill up, freight,
   hamper, handicap, heap, heap up, jam, jam-pack, ladle, load, mass,
   oppress, overburden, overfill, overload, overtax, overweight, pack,
   pack away, pad, pile, pocket, press hard upon, ram in,
   rest hard upon, sack, saddle, satiate, saturate, scoop, ship,
   stack, store, stow, stuff, supercharge, surfeit, tax, top off, wad,
   weigh, weigh heavy on, weigh on, weigh upon, weight