GNU Collaborative International Dictionary of English

Found one definition

1.       
   Junto (jŭnˈtṓ), n.; pl. Juntos (jŭnˈtṓs). [Sp. junto united. See Junta.] A secret council to deliberate on affairs of government or politics; a number of men combined for party intrigue; a faction; a cabal; as, “a junto of ministers; a junto of politicians.”
   
   [1913 Webster]
   
   The puzzling sons of party next appeared,
   
   In dark cabals and mighty juntos met. Thomson.
   
   [1913 Webster]