The Collaborative International Dictionary of English v.0.48:

Synagogue \Syn"a*gogue\, n. [F., from L. synagoga, Gr. ? a
   bringing together, an assembly, a synagogue, fr. ? to bring
   together; sy`n with + ? to lead. See Syn-, and Agent.]
   1. A congregation or assembly of Jews met for the purpose of
      worship, or the performance of religious rites.
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   2. The building or place appropriated to the religious
      worship of the Jews.
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   3. The council of, probably, 120 members among the Jews,
      first appointed after the return from the Babylonish
      captivity; -- called also the Great Synagogue, and
      sometimes, though erroneously, the Sanhedrin.
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   4. A congregation in the early Christian church.
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            My brethren, . . . if there come into your synagogue
            a man with a gold ring.               --James ii.
                                                  1,2 (Rev.
                                                  Ver.).
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   5. Any assembly of men. [Obs. or R.] --Milton.
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