This part of the Polander site is devoted to the adjectives describing
People from Poland. If you should know of an occurrence in English of
such adjective, please send it with the exact source of the word to:
adjective@polander.org
  • The Oxford English Dictionary. Second Edition. Prepared by J.A.
    Simpson and E.S.C. Weiner Volume XII Poise-Quelt Clarendon
    Press, Oxford 1989

Definitions:
Polan. Obs. [a. OF. Poul(a)in Polish, a Pole.] A Pole, a native of Poland.
1502 in Ellis Orig. Lett. Ser. 1. I. 50 The Hungaries, Boyams, and the
Polans. 1604 T. Wright Passions 1. x. 44, I might discourse over …
Italians, Polans, Germanes.

Poland wheat – p. 11

Hence Polander, a native of Poland, a Pole (obs.); also a Poland fowl.
Poland fowl - p. 11
Poland manna p. 11

Poless a Polish woman – p. 19

Poland. The name of town in Maine, U.S., used attrib. and absol. to
designate the variety of mineral water obtained from springs there. – p.
11

Poland mineral spring water – 1881

Polonese sb. And a. Obs. [ad. F. polonaise Polish, It. Polonese, f. med.
L. Polonia Poland; see – ese.] – p. 44

Polonial a. and sb. [f. Polonia + - an.] = Polish – p. 45

1922 Blackw. Mag. June 801/2 A very intelligent-looking secretary to the
Polonial Embassy to the Vatican assured me [etc.].

Polonian, a. and sb. [f. Polonia + -an.]

A.        adj. Of Poland; = Polish a. Obs. Or arch.

1585 T. Washington tr. Nicholay’s Voy. Iv. Xiii. 126 b, A long cappe after
the Polonian or Georgian fashion. 1655 Owen Vind. Evagelicae Wks.
1853 XII. 18 This Captain-general of the Polonian forces. 1776 Mickle
tr. Camoens’ Lusiad Introd. 55 He was a Polonian Jew by birth.
B. sb. 1. A native of Poland, a Pole. Arch.
  • The New Shorter Oxford English Dictionary on Historical
    Principles. Edited by Lesley Brown. Volume 2 N-Z. Clarendon
    Press. Oxford, 1993

Definitions:
Polonese n. Pl. same. – A native of Poland, a Pole. – p. 2277
Polonian, a. & n. arch. M16. [f. med. L Polonia Poland + -an] A adj. Of
Poland; Polish. A native or inhabitant of Poland.
Polander – now rare or obscure. A native of Poland, a Pole.