DuckCorp Dico

Found one definition

1.                 From Japanese-English FreeDict Dictionary ver. 0.1:
                   
   
   
                   
                     
   酥 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, 蘇 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, そ /sˈo̞/
   1. (noun (common) (futsuumeishi))
   condensed milk
   2. (蘇)
    (noun (common) (futsuumeishi))
    (noun, used as a suffix)
    (noun, used as a prefix)
   蘇維埃・2
            Note: abbreviationSoviet Union