The Collaborative International Dictionary of English v.0.48:

Advocation \Ad`vo*ca"tion\, n. [L. advocatio: cf. OF. avocation.
   See Advowson.]
   1. The act of advocating or pleading; plea; advocacy.
      [Archaic]
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            The holy Jesus . . . sits in heaven in a perpetual
            advocation for us.                    --Jer. Taylor.
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   2. Advowson. [Obs.]
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            The donations or advocations of church livings.
                                                  --Sanderson.
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   3. (Scots Law) The process of removing a cause from an
      inferior court to the supreme court. --Bell.
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