Definition of "kersey"

Hencefoorth my wooing minde ſhalbe expreſt / In ruſſet yeas, and honeſt kerſie noes.

c. 1595–1596 (date written), W. Shakespere [i.e., William Shakespeare], A Pleasant Conceited Comedie Called, Loues Labors Lost. […] (First Quarto), London: […] W[illiam] W[hite] for Cut[h]bert Burby, published 1598; republished as Shakspere’s Loves Labours Lost (Shakspere-Quarto Facsimiles; no. 5), London: W[illiam] Griggs, […], [Act V, scene ii]

[T]here was a Report, that one of our Ships having by Stealth delivered her Cargo, among which was ſome Bales of Engliſh Cloth, Cotton, Kerſyes, and ſuch like Goods, the Spaniards cauſed all the Goods to be burnt, and puniſhed the Men with Death who were concern'd in carrying them on Shore.

1722, [Daniel Defoe], A Journal of the Plague Year, London: Printed for E[lizabeth] Nutt at the Royal-Exchange; J. Roberts in Warwick-Lane; A. Dodd without Temple-Bar; and J. Graves in St. James's-street, page 247

In Adirondac lakes, / At morn or noon, the guide rows bareheaded: / Shoes, flannel shirt, and kersey trousers make / His brief toilette […]

1867, Ralph Waldo Emerson, “The Adirondacs”, in May-Day and Other Pieces, Boston, Mass.: Ticknor and Fields; republished Boston, Mass.: James R. Osgood and Company, late Ticknor & Fields, and Fields, Osgood, & Co., 1875, page 47