Dictionary.net

• At Cambridge, a student advanced beyond the first year of his residence; a sophistical reasoner.

1914 - Nuttall's Standard dictionary of the English language
By Nuttall, P.Austin.

• Usually soph, which see, in the universities of Cambridge, Oxford, and Dublin, a student during his second and third years.

1874 - Etymological and pronouncing dictionary of the English language
By Stormonth, James, Phelp, P. H.