Definition of "woollen"

In a large bedroom upstairs, the window of which was thickly curtained with a great woollen shawl lately discarded by the landlady, Mrs. Rolliver, were gathered on this evening nearly a dozen persons, all seeking vinous bliss; all old inhabitants of the nearer end of Marlott, and frequenters of this retreat.

1891, Thomas Hardy, chapter IV, in Tess of the d’Urbervilles: A Pure Woman Faithfully Presented […], volume I, London: James R[ipley] Osgood, McIlvaine and Co., […], phase the first (The Maiden), pages 40–41