What does the word setter mean?

Usage examples for setter

  1. If we weren't a little crowded this year by the type- setter I'd send a check large enough to buy a family Bible or some other useful thing like that. – Mark Twain, A Biography, 1835-1910, Complete The Personal And Literary Life Of Samuel Langhorne Clemens by Albert Bigelow Paine Last Updated: February 20, 2009
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