单词 glastum 释义 ‖ glastum[L., a. OCeltic *glaston, represented by Ir. Gael. glas, Welsh glas, bluish or greenish grey.]The plant woad (Isatis).c1540tr. Pol. Verg. Eng. Hist. (Camden) I. i. 49 They smeered their face with an herbe called glastum..This...