Definition of "superfine"

The bulk of Mankind have not leisure for Learning and Logick, and superfine distinctions of the Schools.

1695, John Locke, The Reasonableness of Christianity

This place, with regard to superfine visitors, fills slowly and the season is expected not only to be late, but thin, of company, from the many families that are rambling abroad.

1815, Frances Burney, Journals and Letters, Penguin, published 2001, page 498

Ask her if she would exchange her brave husband for one of those superfine niceties, who suing for favor at her feet, had at the same time lined their vows of love and constancy with the yellow dust, which had they known the strong chest to have been at their backs, while in this humble posture, it were uncertain to which might have been made an apology,—the fair lady or her dowry.

1859, Ferna Vale, Natalie; or, A Gem Among the Sea-Weeds

Twelve years ago they made only course [sic] Cloth, but now they weave superfine, and fine Cloth.

1726, The Political state of Great Britain, page 370

With respect to the matter of the medals, we must observe that, for the generality, they are made of pure gold or silver, without the allay of any other metal. Some indeed are struck on superfine copper.

1799, The laboratory; or, School of arts, page 225

This set contains 97 pieces of superfine china and 24 pieces of etched Belgian glassware

1932 August 26, “Combination Dinner Set / Of 121 Pieces for 27.50”, in Calgary Daily Herald