What does ablegate mean?
The definition of ablegate
Ab”le*gate, v. t.
Etym: [L. ablegatus, p. p. of ablegare; ab + legare to send with a commission. See Legate.]

To send abroad. [Obs.] Bailey.

Ab”le*gate, n. (R. C. Ch.)
A representative of the pope charged with important commissions in foreign countries, one of his duties being to bring to a newly named cardinal his insignia of office.