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Found one definition

1.                 From Japanese-English FreeDict Dictionary ver. 0.1:
                   
   
   
                   
                     
    [news1]  [nf04]  次々 /(en)tʃˈaɪniːz(ja)lˈe̞tə lˈe̞təsˈänɹˈe̞iɹˈe̞iɡˈo̞/, 次次 /(en)tʃˈaɪniːz(ja)lˈe̞tə (en)tʃˈaɪniːz(ja)lˈe̞tə/,  [news1]  [nf04] つぎつぎ /tsˌɯᵝɡitsˈɯᵝɡi/
   (adverb (fukushi))
    (adverb taking the `to' particle)
    (noun (common) (futsuumeishi))
   in succession, one by one