Second International
noun
an international association formed in 1889 in Paris, uniting socialistic groups or parties of various countries and holding international congresses from time to time: in 1923 it joined with the Vienna International to form the Labor and Socialist International.
Compare international(def 6).
British Dictionary definitions for second international
Second International
noun
the Second International
an international association of socialist parties and trade unions that began in Paris in 1889 and collapsed during World War I. The right-wing elements reassembled at Berne in 1919
See also Labour and Socialist International
another name for the Labour and Socialist International