Definition of "cordiality"

Upon my entrance, Usher rose from a sofa on which he had been lying at full length, and greeted me with a vivacious warmth which had much in it, I at first thought, of an overdone cordiality—of the constrained effort of the ennuyé man of the world.

1839, Edgar Allan Poe, The Fall of the House of Usher‎

Adam gave her—the spaniel, not Mrs. Florin—a gentle prod with his foot and a lump of sugar. She licked his shoe with evident cordiality. Adam was not above feeling flattered by friendliness in dogs.

1930, Evelyn Waugh, chapter V, in Vile Bodies, New York: Back Bay Books, published 1999

Lucia rivalled these cordialities with equal fervour and about as much sincerity.

1931, E. F. Benson, chapter 5, in Mapp and Lucia‎