DuckCorp Dico

Found one definition

1.                 From Japanese-German FreeDict Dictionary ver. 0.2.0:
                   
   
   
                   
                     
   大 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, だい /dˈäi/
   (prefix)
   (1) groß, (2) hervorragend, laut, weit, stark, (3) lang (Monat), (n) Taishō (Ärabez.: 30.7.1912–25.12.1926)