α. see swine n. and grass n.1; also late Old English swinegers (Kentish).
β. Middle English suines gres, Middle English swines gras, Middle English swines gres, Middle English swynes garce, Middle English swynes gersse, Middle English swynes gres, Middle English swynys grees, 1500s swynes grasse, 1500s–1600s swines grasse, 1600s swines grass, 1700s– swine's grass.