The Collaborative International Dictionary of English v.0.48:

Disembogue \Dis`em*bogue"\, v. t. [imp. & p. p. Disembogued;
   p. pr. & vb. n. Disemboguing.] [Sp. desembocar; pref. des-
   (L. dis-) + embocar to put into the mouth, fr. en (L. in) +
   boca mouth, fr. L. bucca cheek. Cf. Debouch, Embogue.]
   1. To pour out or discharge at the mouth, as a stream; to
      vent; to discharge into an ocean, a lake, etc.
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            Rolling down, the steep Timavus raves,
            And through nine channels disembogues his waves.
                                                  --Addison.
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   2. To eject; to cast forth. [R.] --Swift.
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The Collaborative International Dictionary of English v.0.48:

Disembogue \Dis`em*bogue"\, v. i.
   To become discharged; to flow out; to find vent; to pour out
   contents.
   [1913 Webster]

         Volcanos bellow ere they disembogue.     --Young.
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