Obs. Also 6 westorne. [Of obscure origin.] The sand-martin, Cotile riparia.
1556. Withals, Dict. (1562), 5/2. A westorne or marten, whiche breedeth in water bankes, riparia.
1589. Rider, Bibl. Schol., I. 1702. Birds, A Marten, or westerne. Ibid., 1705. A westorne, vide marten.
1668. Charleton, Onomast., 90. Hirundo Riparia … the Sand, or Bank Marten, or Western.
