DCHP-1 Online
blackcoat 
n. originally in Indian parlance, a priest, especially a missionary of the Roman Catholic or Anglican denominations.
See also: blackrobe
- c1665 (1885) Let us shake off the yoake of a company of whelps that killed so many french and black-coats, and so many of my nation.
- 1851 (1888) We are glad to see this black coat among us.
- 1910 The talk drifts on to the redcoats of "the force" who have graduated to the blackcoats of the church.
- c1665 (1885) Let us shake off the yoake of a company of whelps that killed so many french and black-coats, and so many of my nation.