Definition of "surpliced"

Surpliced Sirs farewell, / I can tell, my name full well.

c. 1589, anonymous author, O read me for I am of great antiquitie‎

At Westminster the surplic’d dean / The sad but honourable scene / Prepares.

1757, Richard Owen, “To Mr. Whitehead, On his being made Poet Laureat”, in Robert Dodsley, editor, A Collection of Poems in Six Volumes‎, volume 6, London: J. Dodsley, page 338

Then everybody once more knelt, and soon the blessing was pronounced. The choir and the clergy trooped out slowly, […] down the nave to the western door. […] At a seemingly immense distance the surpliced group stopped to say the last prayer.

1918, W[illiam] B[abington] Maxwell, chapter V, in The Mirror and the Lamp, Indianapolis, Ind.: The Bobbs-Merrill Company

After Mass one sunrise the canoes entered the troughs / of the surpliced shallows,

1990, Derek Walcott, chapter 1, in Omeros‎, New York: Farrar Straus Giroux, page 8