The Collaborative International Dictionary of English v.0.48:

Oblation \Ob*la"tion\, n. [L. oblatio: cf. F. oblation. See
   Oblate.]
   1. The act of offering, or of making an offering. --Locke.
      [1913 Webster]

   2. Anything offered or presented in worship or sacred
      service; an offering; a sacrifice.
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            A peculiar . . . oblation given to God. --Jer.
                                                  Taylor.
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            A pin was the usual oblation.         --Sir. W.
                                                  Scott.
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   3. A gift or contribution made to a church, as for the
      expenses of the eucharist, or for the support of the
      clergy and the poor.
      [1913 Webster]

WordNet (r) 3.0 (2006):

oblation
    n 1: the act of contributing to the funds of a church or
         charity; "oblations for aid to the poor" [syn: oblation,
         offering]
    2: the act of offering the bread and wine of the Eucharist [syn:
       Oblation, religious offering]