Definition of "winsome"

[…] lifting her winsome eyes to my face with that sort of look which turns off bad temper, even when one has all the right in the world to indulge it.

1847, Emily Brontë, chapter IX, in Wuthering Heights‎

Will ye keep your troth to me, / Winsome Annie Ramsay? / Will ye keep your troth to me, / Winsome Annie Ramsay? / Will ye keep your troth to me? / My ain true luve will ye be? / Then meet me at the trysting tree, / Winsome Annie Ramsay.

1851 October, Jonathan Freke Slingsby [pseudonym; John Francis Waller], “Slingsby in Scotland. Part II.—Conclusion.”, in The Dublin University Magazine, a Literary and Political Journal, volume XXXVIII, number CCXXVI, Dublin: James McGlashan, 50 Upper Sackville-St.; London: W[illia]m S[omerville] Orr, stanza I, page 494

Gerty MacDowell who was seated near her companions, lost in thought, gazing far away into the distance was in very truth as fair a specimen of winsome Irish girlhood as one could wish to see.

1922 February, James Joyce, “[Episode 13, Nausicaa]”, in Ulysses, Paris: Shakespeare and Company, […], part II [Odyssey], page 333

He [Ching Keng Lee] is a man of fine physique and above the height of the average Straits-born, with a shrewd business head, and affable and winsome manners, and continues to take a keen interest in public affairs.

1923, Song Ong Siang, “The Ninth Decade (1899–1909): Second Part”, in One Hundred Years’ History of the Chinese in Singapore: […], London: John Murray, […], page 377

The pink wallpaper of the nursery was decorated with a Noah's Ark of friendly lions and comical giraffes and winsome elephants.

1961, David Alexander, “When the Rain Stops”, in Hangman’s Dozen, New York, N.Y.: Roy Publishers, page 216