The Collaborative International Dictionary of English v.0.48:

Lodgment \Lodg"ment\, n. [Written also lodgement.] [Cf. F.
   logement. See Lodge, v.]
   1. The act of lodging, or the state of being lodged.
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            Any particle which is of size enough to make a
            lodgment afterwards in the small arteries. --Paley.
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   2. A lodging place; a room. [Obs.]
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   3. An accumulation or collection of something deposited in a
      place or remaining at rest.
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   4. (Mil.) The occupation and holding of a position, as by a
      besieging party; an instrument thrown up in a captured
      position; as, to effect a lodgment.
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The Collaborative International Dictionary of English v.0.48:

Lodgement \Lodge"ment\, n.
   See Lodgment.
   [1913 Webster]

WordNet (r) 3.0 (2006):

lodgement
    n 1: bringing a charge or accusation against someone [syn:
         lodgment, lodgement]
    2: the state or quality of being lodged or fixed even
       temporarily; "the lodgment of the balloon in the tree" [syn:
       lodgment, lodgement, lodging]