ÞrifildanBosworth & Toller 盎格鲁-撒克逊古英语词典 - þrifildan根据古英语词典：þrifildanp. de To triple :-- Ic þryfylde triplico, Ælfc. Gr. 49; Zup. 287, 4. [Icel. þrífalda.] þrifildan