What does advocation mean?
The definition of advocation
Ad`vo*ca”tion, n.
Etym: [L. advocatio: cf. OF. avocation. See Advowson.]

1 The act of advocating or pleading; plea; advocacy. [Archaic] The holy Jesus . . . sits in heaven in a perpetual advocation for us. Jer. Taylor.
2 Advowson. [Obs.] The donations or advocations of church livings. Sanderson.
3 (Scots Law)
The process of removing a cause from an inferior court to the supreme court. Bell.