winter-dūn, f.n: a down or hill on which there is pasturage for sheep during the winter. (WIN-ter-DOON / ˈwɪn-tɛr-ˌduːn)
Sheep graze on a hillside while one shepherd plays pipes and the other points to a star. The Luttrell Psalter. England (Lincoln), c. 1325-1335. British Library, Additional MS 42130, f. 87v. [bl.uk]