Definition of "in the main" [in the main]

• Without distinction of one from others (adverb)
• For the most part (adverb)

WordNet. Princeton University. 2010.

• "Jack Mercier's words, spoken on the day that he first asked me to look into Grace's death, came back to me as I learned of what had been found in the main salon of the Eliza May, its decks stained with red and Jack Mercier's crucified form hanging from the mast."
• "The first time he played in the main event of the WSOP, he came within a hand of upsetting Johnny Chan for the championship, a confrontation that was immortalized in 1998 in the movie Rounders."
• "Ildephonsus were Probabilists subsequently the Dominicans in the main were Probabiliorists."